Crochet Sweater Vest Pattern: Easy DIY Mustard Yellow Ribbed Top

There is something deeply satisfying about wearing something you made with your own hands. A sweater vest is one of those wardrobe pieces that walks the perfect line between cozy and stylish, and when it is worked up in a warm mustard yellow with a classic ribbed texture, it becomes something truly special. Whether you are a seasoned crocheter looking for a wearable project you can finish in a weekend or someone who has mastered the basics and wants to level up to garment making, this crochet sweater vest pattern is exactly what you need.

This post will walk you through everything: the materials, the stitch techniques, the sizing, and the full pattern instructions. By the end, you will have a beautiful ribbed crochet vest you can style over a turtleneck in the fall, layer over a long-sleeve shirt in winter, or even wear alone on a breezy summer evening. Let’s get into it.

Why Mustard Yellow?

Before we dive into the pattern itself, let’s talk about the color. Mustard yellow has had a long and well-deserved moment in the fashion world, and it does not seem to be going anywhere. It is earthy, warm, and flattering across a wide range of skin tones. Unlike a bright or neon yellow, mustard reads as sophisticated and autumnal — perfect for the kind of cozy knit aesthetic that fills our Pinterest boards and Instagram feeds every September through March.

When paired with the right yarn, mustard yellow also has incredible depth. Yarns with a slight twist or texture variation catch the light in ways that make ribbed stitches look almost architectural. If you have been on the fence about working up a garment in a bold color, this is your sign to go for the mustard.

Materials You Will Need

Getting your materials right is the most important first step in any crochet garment project. Here is what you will need to make this ribbed crochet sweater vest.

Yarn: You will need approximately 800–1,200 yards of medium weight (Category 4) yarn in mustard yellow, depending on your size. A yarn with a bit of elasticity works beautifully for ribbing — something like a wool blend, cotton-acrylic blend, or a dedicated “easy care” yarn that holds its shape after washing. Brands like Lion Brand Pound of Love, Paintbox Simply DK (worked at a slightly denser gauge), Caron Simply Soft, or Paintbox Simply Aran all come in lovely mustard or golden yellow shades. Always check yardage when substituting.

Hook: A US size J/6.0mm crochet hook is a great starting point for this pattern. That said, always swatch first and adjust your hook size as needed to meet gauge.

Notions: Stitch markers, a yarn needle for weaving in ends, scissors, and a tape measure. If you plan to add buttons to the shoulders (optional), you will also need two or three 1-inch buttons and a sewing needle with matching thread.

Gauge: 14 stitches and 10 rows = 4 inches in the ribbing stitch pattern (half double crochet through the back loop only). Gauge is especially important for garments, so please do not skip your swatch.

Understanding the Ribbing Stitch

The star of this pattern is the ribbed texture, which is created using one of the simplest techniques in crochet: working into the back loop only (BLO). When you insert your hook into only the back loop of each stitch rather than both loops, it creates a horizontal ridge on the front of your work that mimics the look of knitted ribbing. It is stretchy, forgiving, and looks absolutely stunning in a chunky or medium weight yarn.

For this vest, we use the half double crochet through the back loop only (hdc BLO) as the foundation of our fabric. The half double crochet has just enough height to build rows quickly without being as open as a regular double crochet, which gives the fabric a dense, cozy feel that is ideal for a wearable garment.

If you have never worked hdc BLO before, here is the breakdown: after completing your foundation chain and turning, you will yarn over, insert your hook under only the back loop (the loop farthest from you) of each stitch, pull up a loop, and complete your half double crochet as normal (yarn over, pull through all three loops). That’s it. Once you get a rhythm going, this stitch is genuinely meditative to work.

Sizing Guide

This pattern is written for sizes Small through 2X, with measurements as follows. For the best fit, measure your bust and choose the size closest to your actual measurement, going up a size if you are between sizes for a more relaxed fit.

Small (S): 34–36 inch bust, finished measurements approximately 36 inches around
Medium (M): 37–39 inch bust, finished measurements approximately 40 inches around
Large (L): 40–42 inch bust, finished measurements approximately 44 inches around
Extra Large (XL): 43–46 inch bust, finished measurements approximately 48 inches around
2X: 47–50 inch bust, finished measurements approximately 52 inches around

The vest is designed with approximately 2–4 inches of positive ease, meaning it will be slightly larger than your actual measurement for a relaxed, comfortable fit. If you prefer a more fitted silhouette, go down one size from your measurement.

The length of the finished vest from shoulder to hem is approximately 22–24 inches, which hits at or just below the hip for most heights. Instructions for adjusting length are included in the pattern.

Pattern Notes and Abbreviations

Before we start, a few quick notes.

The vest is worked in two flat panels (a front and a back) that are then seamed at the shoulders and sides. This construction makes it easy to try on as you go and adjust measurements before finishing.

Abbreviations used in this pattern:
ch = chain, sc = single crochet, hdc = half double crochet, BLO = back loop only, st(s) = stitch(es), sp = space, RS = right side, WS = wrong side, rep = repeat, sk = skip, sl st = slip stitch, t-ch = turning chain.

All turning chains in this pattern count as the first stitch of the row unless otherwise noted.

The Pattern: Ribbed Crochet Sweater Vest

Front Panel

Foundation Chain: Chain 65 (73, 81, 89, 97). The number of chains you work corresponds to your size in the order S, M, L, XL, 2X.

Row 1 (RS): Hdc in the 3rd chain from the hook and in each chain across. You will have 63 (71, 79, 87, 95) hdc. Turn.

Row 2: Ch 2 (counts as first hdc), hdc BLO in each stitch across to the last stitch, hdc in the top of the turning chain. Turn.

Repeat Row 2 until your piece measures 14 (14, 14.5, 14.5, 15) inches from the foundation chain, or your desired length to the underarm. This is your body section. End with a WS row.

Armhole Shaping:

Row 1 (RS): Sl st across the first 6 (7, 8, 9, 10) stitches, ch 2, hdc BLO across until 6 (7, 8, 9, 10) stitches remain, leave remaining stitches unworked. Turn. You now have 51 (57, 63, 69, 75) stitches.

Row 2: Ch 2, hdc2tog BLO, hdc BLO across until 2 stitches remain, hdc2tog BLO, hdc in turning chain. Turn. You have decreased 2 stitches.

Repeat Row 2 three more times. You will have 43 (49, 55, 61, 67) stitches remaining.

Continue working even in hdc BLO (no decreases) until the armhole measures 7 (7.5, 8, 8.5, 9) inches from the first armhole shaping row.

Neck Shaping:

On the next RS row, work across the first 13 (15, 17, 19, 21) stitches and turn, leaving the rest unworked. This is your first shoulder. Work even on these stitches for 2 more rows. Fasten off.

Count to the center of your remaining stitches and skip 17 (19, 21, 23, 25) stitches for the neck opening. Rejoin yarn to the next stitch and work the remaining 13 (15, 17, 19, 21) stitches for the second shoulder. Work even for 2 more rows. Fasten off.

Back Panel

Work the back panel exactly as the front panel through the armhole shaping. Continue working even in hdc BLO until the armhole measures 8.5 (9, 9.5, 10, 10.5) inches, which is slightly taller than the front. This allows for a higher back neckline that gives the vest a classic, polished look.

Back Neck Shaping:

Work across 13 (15, 17, 19, 21) stitches and turn. Work even for 1 row. Fasten off. Skip 17 (19, 21, 23, 25) center stitches, rejoin yarn and work the second shoulder for 1 row. Fasten off.

Assembly

Lay your front and back panels flat with the right sides together and pin the shoulder seams in place, matching the stitch counts. Seam the shoulders using a whip stitch or mattress stitch with your yarn needle, being careful to keep the tension even. The ribbing stitch has a bit of stretch to it, so do not pull too tightly.

Turn the vest inside out and seam the side seams, leaving the armhole openings unworked. You will seam from the hem up to approximately 1 inch below where the armhole shaping begins, leaving that portion open as the armhole. Turn right side out and try on the vest to make sure you are happy with the fit before weaving in your ends.

Finishing the Edges

The finishing is what takes a crochet garment from homemade to handmade in the best possible way. Take your time with this step.

Hem and Side Edges: Join yarn to the bottom edge of the vest at a side seam and work a single round of sc around the entire hem. Slip stitch to join and fasten off.

Armhole Edges: Join yarn to the underarm of one armhole and work a single round of sc around the armhole opening, placing stitches evenly around the curve. You may need to skip a stitch here and there on the curves to keep the edge from ruffling. Sl st to join. Fasten off. Repeat for the second armhole.

Neckline: Join yarn to the center back neck and work a round of sc around the entire neckline, including around the front neck shaping. Work an extra sc in any corners to keep them neat. Sl st to join. Fasten off.

Weave in all ends securely with your yarn needle, especially at the seams and where you joined for edge work. Give your vest a gentle blocking by wetting it lightly, pressing out the shape on a flat surface, and allowing it to air dry. Blocking makes a dramatic difference in how garments look and feel, softening the stitches and evening out any tension inconsistencies.

Customization Ideas

One of the great joys of making your own clothing is the ability to make it exactly what you want. Here are a few ways to customize this vest pattern.

Add a Belt Loop: Work a short chain in the center of each side seam at the waist and attach a matching or contrasting yarn or fabric belt for a more defined silhouette.

Button Shoulders: Instead of seaming the shoulders completely, work the seam on just the inner half of each shoulder and add two or three buttons on the outer half so the shoulders can be worn open for a deconstructed, editorial look.

Extended Hem: Want more of a mini dress than a vest? Simply keep working the body section until it reaches your desired length before beginning the armhole shaping. Add 150–200 extra yards to your yardage estimate for a midi-length option.

Colorblocking: Work the body section in mustard yellow, then switch to cream, rust, or forest green for the yoke above the armhole shaping. Because the vest is worked in two flat panels, you can plan your color changes row by row.

Add Pockets: Before seaming the side panels, work two small rectangular pocket linings separately and attach them to the wrong side of the front panel at hip level. Then when seaming the sides, work around the pocket opening rather than seaming straight across, leaving a 4–5 inch gap for each pocket.

Styling Your Mustard Yellow Crochet Vest

Now for the fun part. Here are some outfit ideas to inspire you once your vest is finished and blocked.

For a classic fall look, layer your vest over a fitted white or cream ribbed turtleneck, pair with high-waisted straight-leg jeans in a medium wash, and finish with ankle boots. The mustard yellow pops beautifully against white and denim.

For a more bohemian vibe, try the vest over a flowy long-sleeve floral blouse with wide-leg trousers and a pair of clogs or loafers. Let the vest hang open at the shoulders if you chose the button option.

For something a little more polished, layer the vest over a crisp Oxford shirt, tuck in the front of the shirt, and add tailored trousers in a camel or chocolate brown tone. Add simple gold earrings and you have an outfit that could take you from a brunch date to an afternoon gallery visit without changing a thing.

Do not underestimate how good this vest looks on its own in warmer weather. Over a simple bralette or a fitted spaghetti strap top with linen trousers or a midi skirt, the vest becomes a fashion-forward summer statement piece.

Troubleshooting Common Issues

My ribbing looks flat and does not have texture. Double-check that you are working into the back loop only and not both loops. The ridge created by the skipped front loop is what creates the ribbed look.

My vest is curling at the edges. A small amount of curling is normal before blocking, especially in the BLO stitch. Blocking will resolve most of this. If curling is severe, try going up a hook size or adjusting your tension.

My armhole feels too small or too large. Because the armhole shaping involves a slip stitch decrease rather than a gradual decrease, the fit can feel a bit abrupt. If you find the armhole is too small, rework the shaping row with fewer slip stitches at the beginning. If it is too large, consider adding an extra sc edging round around the armhole.

I’m running out of yarn. This can happen if your gauge is slightly off from what the pattern specifies or if you have a larger frame. Always purchase an extra skein just in case, especially since dye lots can vary and you want everything to match.

A Note on Yardage by Size

To help with planning your purchase, here are rough yardage estimates by size using a Category 4 medium weight yarn at the gauge given.

Small: approximately 800–850 yards. Medium: approximately 900–950 yards. Large: approximately 1,000–1,050 yards. Extra Large: approximately 1,100–1,150 yards. 2X: approximately 1,150–1,250 yards.

Always buy slightly more than you think you need. There is nothing worse than running out of yarn on the last few rows of a project.

Final Thoughts

Making your own clothing is one of the most empowering things you can do as a crocheter. This mustard yellow ribbed vest is a project that is approachable enough for someone stepping into garment making for the first time while still being interesting and satisfying for someone who has made dozens of wearable crochet pieces. The hdc BLO stitch works up quickly once you get going, the construction is straightforward, and the finished result is a genuinely beautiful, wearable piece that people will compliment you on.

If you make this vest, share it! Tag your photos on Instagram or Pinterest so other makers can find inspiration in your version. Seeing how different people interpret a pattern — their yarn choices, their sizing, their styling — is one of the most beautiful parts of the crochet community.

Happy hooking, and enjoy every single stitch of that gorgeous mustard yellow ribbing.