Crochet Butterfly Two-Piece Set Pattern | Summer Crochet Top & Shorts PDF
There is something undeniably magical about creating a complete outfit from scratch. The moment you finish that last stitch and hold up a finished two-piece set — a delicate top and matching shorts — the feeling is unlike anything else in the crafting world. This crochet butterfly two-piece set pattern is designed for makers who love wearable art, who want a summer look that feels handmade in the best possible way, and who are ready to take on a project that is both satisfying and genuinely stunning.
Whether you are heading to a beach vacation, a summer festival, or simply want a breezy set to wear around the house on a warm afternoon, this pattern gives you everything you need. The butterfly motif runs throughout both pieces, lending the entire set a whimsical, nature-inspired charm that photographs beautifully and wears even better. Let’s walk through the full pattern, including materials, sizing, stitch guides, and construction notes, so you can get started right away.
Why You Will Love This Pattern
This pattern was designed with versatility in mind. The cropped top can be worn over a swimsuit as a beach cover-up, styled over a bralette for a festival look, or layered under a high-waisted skirt for something more polished. The matching shorts work equally well as swim cover-up bottoms, loungewear, or casual warm-weather bottoms paired with sandals and a simple tee.
The butterfly motif itself is worked in a way that feels decorative without being overly complex. Once you get the rhythm of it, the repeat flows naturally, and the finished fabric has a beautiful open lace quality that makes it ideal for hot weather. The set works up relatively quickly because of the open stitch work, which is always a bonus when you are excited to wear something you are making.
This is a pattern suitable for intermediate crochet makers. If you are comfortable with basic stitches, working in the round, and reading a written pattern, you will do just fine. A few of the decorative elements involve joining motifs and working short rows, but nothing here is beyond reach with a little patience.
Materials You Will Need
Before you cast on — or rather, before you make that first slip knot — gather everything you need so the process stays smooth and enjoyable.
Yarn: You will need approximately 400 to 600 yards of a lightweight cotton yarn, depending on your size. A DK weight or light worsted cotton blend works beautifully for this pattern. Look for something with good stitch definition so the butterfly motifs read clearly. Suggestions include Paintbox Yarns Simply DK, Lion Brand 24/7 Cotton, or Drops Safran. For the full set in a medium size, plan for around 500 yards. Go up to 600 yards for larger sizes or if you prefer a longer top.
Hook: A 4.0 mm (G/6) crochet hook is recommended for the main body of the pattern. You may want a 3.5 mm hook for finishing details if you find your edges come out a little loose.
Notions: You will need a yarn needle for weaving in ends, scissors, stitch markers, a measuring tape, and about six to eight removable stitch markers for marking pattern repeats and shaping sections.
Elastic (for shorts): A 1-inch wide elastic band cut to your waist measurement minus about one inch. This will be threaded through the waistband casing of the shorts.
Optional: A small amount of coordinating ribbon or decorative cord if you want to add a tie detail at the waist of the top.
Sizing Guide
This pattern is written for sizes XS through XL. Here is a breakdown of finished measurements to help you choose the right size.
The top is designed with a slightly relaxed fit and a cropped length hitting just below the bust or at the natural waist depending on your torso length. The shorts have a 2-inch stretch in the waist due to the elastic casing and are designed to sit at the natural waist with a relaxed fit through the hip and thigh.
For size XS, the finished bust measurement of the top is 28 to 30 inches. For size S, plan for 32 to 34 inches. Medium lands at 36 to 38 inches, Large at 40 to 42 inches, and XL at 44 to 46 inches. The shorts follow the same hip sizing. Always measure yourself and swatch before beginning to ensure the best fit.
Gauge
Gauge is especially important for wearables, so please take the time to make a swatch before diving into the full project.
Work 12 stitches and 8 rows in the main body stitch pattern (described below) using your chosen yarn and a 4.0 mm hook. The swatch should measure 4 inches by 4 inches. If your swatch is larger, go down a hook size. If it is smaller, go up a hook size. Adjust as needed until your gauge matches.
Abbreviations and Stitch Key
Throughout this pattern, the following abbreviations are used:
ch — chain
sl st — slip stitch
sc — single crochet
hdc — half double crochet
dc — double crochet
tr — treble crochet
BPdc — back post double crochet
FPdc — front post double crochet
sp — space
sk — skip
rep — repeat
pm — place marker
RS — right side
WS — wrong side
The butterfly motif is worked using a combination of chain spaces, treble crochets, and clusters that come together to form the wing shape. The full stitch notation for the butterfly motif is detailed in the motif section below.
Understanding the Butterfly Motif
The butterfly motif is the heart of this pattern and worth spending a little time with before you begin the main pieces. Each motif measures approximately 2.5 inches wide and 2 inches tall. They are joined together in rows using single crochets worked into the chain spaces at the edges of each motif, creating a seamless, connected fabric.
To work a single butterfly motif, begin with a foundation chain of 12. Row 1 (RS): Work 1 dc in the 4th chain from hook. Work 1 dc in each of the next 2 chains, then work a 3-dc cluster in the next chain. Chain 2. Work a 3-dc cluster in the same chain. Work 1 dc in each of the next 3 chains. In the final chain, work a 5-tr fan as follows: (tr, ch 1) four times, then tr in the same stitch. This creates the lower wing.
Row 2 (WS): Chain 4, turn. Work 1 tr in the first chain-1 space, (ch 1, tr) in each remaining chain-1 space across the fan. Sl st to the top of the cluster from the previous row.
Row 3 (RS): This row forms the upper wings. Chain 3, turn. Work 3 dc in the base of the chain. Skip 2 stitches, sl st in the next stitch, chain 5, sl st in the same stitch (this creates the antenna loop). Work 3 dc back into the base stitch. The upper wings mirror the lower wing shape on a smaller scale.
The body of the butterfly is worked with a sl st running up the center after all rows are complete, using a slightly darker shade or a contrasting color if desired, though a single color throughout looks equally elegant.
Once you have worked a practice motif and feel comfortable with the construction, the full pieces come together by repeating and joining these motifs according to the layout charts provided in each section below.
The Crochet Butterfly Top
Construction Overview
The top is worked from the bottom hem upward. The lower half is constructed by joining butterfly motifs in a rectangular panel that wraps around the body. The upper half transitions into a more structured bodice worked in rows with shaping for the armholes and neckline. The straps are worked as attached chains or simple dc columns, depending on your preferred style.
Bottom Panel (Motif Band)
Begin by working the number of butterfly motifs required for your size in a horizontal strip. For XS, work 8 motifs. For S, work 9 motifs. For M, work 10 motifs. For L, work 11 motifs. For XL, work 12 motifs. Join each motif to the next as you go by working the edge sc of each new motif through the corresponding chain space of the previous motif.
Once all motifs for the first row are complete, join the strip into a round by joining the last motif to the first using sc through the matching chain spaces. Place a stitch marker to indicate the beginning of the round.
Work a second row of butterfly motifs joined to the first row in the same manner, offsetting the motifs by half a motif width to create a brick-like join pattern. This staggered placement gives the fabric beautiful movement and prevents the seams from becoming visible.
Bodice
After completing two rows of motifs, work a foundation row of sc evenly across the top edge of the motif band. The number of stitches should be divisible by 4 for your pattern repeat to work out correctly — adjust by one or two stitches if needed.
Row 1 of bodice: Chain 3, work dc across. Row 2: Work BPdc and FPdc alternating across for a ribbed texture that adds structure to the bodice. Continue in dc rows with post stitch ribbing every third row until the bodice measures 4 inches from the top of the motif band, or until it sits just below where you want the armhole shaping to begin.
Armhole Shaping
At the armhole row, divide the work into front and back sections. For a simple construction, the front and back are equal. Work across the first half of the stitches for the front, turning at the center point and leaving the back stitches on hold.
Decrease 1 stitch at each armhole edge every row for 3 rows by working sc2tog or dc2tog at the beginning and end of each row. Continue working straight on the remaining stitches until the front measures the desired height, ending about 1 inch below the shoulder.
Neckline and Straps
For the neckline, work to the center of the front and join new yarn to work each shoulder separately. Decrease at the neckline edge over 2 rows, then work straight on the shoulder stitches until the strap is the desired length. The strap typically needs to measure 8 to 12 inches depending on your torso length and where you want the top to sit.
Join the strap to the corresponding back shoulder stitch by threading the strap through to the wrong side and securing with a yarn needle. Alternatively, work the strap as a button loop and add a small hook-and-eye closure for a dressier finish.
Repeat for the back panel, working armhole and shoulder shaping to match the front.
Finishing the Top
Work one round of sc around the entire neckline and armhole edges to neaten them. Work one round of sl st around the hem if desired. Weave in all ends thoroughly, as wearables tend to get a lot of movement during wear.
The Crochet Butterfly Shorts
Construction Overview
The shorts are worked in two mirrored leg panels that are joined at the center seam, then the waistband is worked in the round over the top. The butterfly motifs appear along the lower hem of each leg for a cohesive look that ties the set together visually.
Leg Panels
Each leg is worked flat as a rectangular panel with a slight increase added on one side for the inner thigh curve. Begin each leg panel by working a foundation chain equal to the desired leg circumference for your size.
For XS and S, work a foundation chain of 48. For M, work 54. For L, work 60. For XL, work 66. Work in the main dc body stitch for the number of rows needed to reach your desired shorts length minus 2 inches for the motif hem border.
Hem Motif Border
Work a row of butterfly motifs along the bottom edge of each leg panel, working across the foundation chain edge of each piece. Join the motifs as described in the top pattern, working as many as fit evenly across the edge. For most sizes, this will be 4 to 5 motifs per leg, which lands beautifully and frames the hem without overwhelming the piece.
Joining the Legs
With right sides facing, join the two leg panels at the center front seam using sc, working from the bottom crotch point up to the waistband edge. Repeat for the center back seam. Then, join the inner leg seam on each leg, from the hem up to the crotch point. This creates the basic shorts shape.
Waistband
Join yarn at the center back of the waistband edge and work sc evenly around the top, placing a stitch marker at the beginning of the round. Work 4 rounds of hdc to create the waistband casing. On round 5, work (ch 2, sk 2, hdc 2) evenly around the top edge to create eyelets for threading the elastic.
Work 2 more rounds of hdc above the eyelet row to enclose the elastic once it is threaded through. Do not close the casing yet.
Cut your elastic to your waist measurement minus 1 inch. Thread the elastic through the eyelet row using a safety pin as a guide. Once the elastic is fully threaded, overlap the ends by about half an inch and sew them together securely using a needle and thread. Close the waistband casing with a final sl st row.
Finishing the Shorts
Work one round of sc around each leg opening to stabilize the edge. Weave in all ends. Block the shorts lightly by misting with water and pinning to measurements, then allow to air dry flat.
Blocking and Care Instructions
Blocking makes an enormous difference with crochet lace and motif work. For this set, wet blocking is recommended. Soak each finished piece in cool water for about 10 minutes until fully saturated, then gently squeeze out excess water without wringing. Lay flat on a blocking mat, pin to measurements, and allow to dry completely.
Because this set is intended to be worn and washed regularly, choose a cotton yarn with good washability. Most 100% cotton or cotton-blend yarns can be machine washed on a gentle cycle in cold water and laid flat to dry. Avoid the dryer, as heat can cause the fabric to shrink or distort.
Tips for Success
Work a motif swatch before starting the full project. This gives you a feel for the butterfly construction and lets you confirm your gauge at the same time.
Use removable stitch markers generously. Marking motif joins, shaping points, and round beginnings saves a lot of frogging down the line.
Keep your tension consistent. Because the butterfly motifs involve both tight cluster stitches and open chain spaces, there can be a tendency for tension to vary. Try to stay relaxed and consistent throughout.
If you want to lengthen the top or the shorts, add extra rows of the main body stitch between the motif band and the bodice, or add an extra row of motifs to the hem borders. The modular nature of the pattern makes adjustments very intuitive.
Consider using a coordinating color for the butterfly bodies and antennae if you want to add a subtle two-tone detail. Even a very small amount of contrast yarn goes a long way in highlighting the motif shape.
Making This Pattern Your Own
One of the greatest joys of working from a PDF pattern is the ability to adapt it. This two-piece set is a beautiful starting point for customization. Try working the entire set in a gradient yarn for a sunset or ocean-inspired colorway. Experiment with adding fringe along the hem motifs for a boho look. Swap the elastic waistband for a drawstring in a contrasting color for something more playful.
The butterfly motif itself can be scaled up by working with a heavier yarn weight and larger hook, which creates bold, oversized butterflies that make even more of a statement. Worked in a fine thread with a small hook, the same motif becomes incredibly delicate and lacy — perfect for a more formal or romantic aesthetic.
Sharing Your Finished Set
When you finish your butterfly two-piece set, please share it! Tag your photos with the pattern name so other makers can find inspiration in your work. Seeing how different yarn choices, color palettes, and personal styling choices transform the same pattern into something completely unique is one of the most wonderful parts of the crochet community.
Whether you are selling finished sets, gifting them, or keeping them entirely for yourself, this pattern is a genuine showpiece. It takes the beauty of the butterfly motif and turns it into something wearable, practical, and full of summer joy.
Happy crocheting — may every stitch bring you a little closer to the finished set hanging in your closet, ready for the warmest, sunniest day of the year.
