This is a crochet pattern for my beginner-friendly baby romper, Little Cookie. Discover what inspired me to design this pattern, the yarn I chose, and how to create this sweet crochet baby romper.
FREE PATTERN: Keep scrolling for the FREE version of this pattern.
PRINTABLE PDF: Get a beautifully designed, print-friendly PDF version of this pattern from Ravelry or Etsy.
There is something so special about simple handmade baby clothes. They are small, sweet, and full of love. I have always enjoyed designing baby crochet patterns that are practical, comfortable, and still beautiful enough to feel like a little keepsake.
The Little Cookie Romper was originally released in February 2017 and received a complete update in June 2026. For this updated version, I reworked the pattern, cleaned up the instructions, and added a video tutorial to make the process easier to follow.
This romper is made with simple stitches, soft ribbing, and a classic shape. It is worked in sections: first the waist ribbing, then the main part, lower part, leg ribbing, straps, and buttons.
About The Pattern
The Little Cookie Romper is a crochet baby romper pattern designed with comfort and everyday wear in mind. It uses basic crochet stitches and simple shaping, which makes it a lovely project for confident beginners and anyone who enjoys making baby clothes.
The romper has a soft ribbed waist, a gently shaped lower part, ribbed leg openings, and two straps with buttonholes. The final result is a classic handmade baby romper that can be worn over a little shirt or onesie.
You can make it in a soft neutral color for a timeless look, or choose a brighter shade for something more playful.
Materials
YARN: Aran-weight yarn. I used Drops Paris in color 41, Mustard. You will need up to 3 skeins.
CROCHET HOOKS: 3.5 mm, and 4.5 mm crochet hooks, or hook sizes needed to obtain the gauge.
YOU WILL ALSO NEED: 4 stitch markers, a tapestry needle, scissors, and 2 buttons, approximately 2.5 cm / 1 inch in diameter.
Gauge
Work 15 stitches and 11 rows in hdc using a 4.5 mm crochet hook and Aran weight yarn to measure 10 x 10 cm / 4 x 4 inches.
Please check your gauge before you start. A small difference in gauge can change the final size of the romper, especially when making baby clothes, where fit matters.
Abbreviations
This pattern is written in US crochet terms.
- st/sts – stitch/stitches
- ch – chain
- ss – slip stitch
- sc – single crochet
- hdc – half double crochet
- hdc2tog – half double crochet two stitches together
- BLO – back loops only
- FLO – front loops only
Size
The free pattern below is written for sizes 0-6 months.
Finished measurements:
- 0-6 months: chest across 28 cm / 11 inches, from top to bottom 25 cm / 9.8 inches. Available in this pattern.
- 6-12 months: chest across 34 cm / 13.4 inches, from top to bottom 31 cm / 12.2 inches. Available in the PDF pattern only.
Skill Level
Easy/Medium.
Pattern Notes
- Chain at the beginning of the round does not count as a stitch unless otherwise stated.
- Work everything in ( ) as a group, and then repeat it as many times as written in the pattern.
- All rows/rounds start in the same stitch as the chain at the beginning of the row/round unless otherwise stated.
- Join the round with a slip stitch made into the first stitch of the round. Slip stitch does not count as a stitch unless otherwise stated.
- The pattern for larger sizes is written in the [ ].
- If the number is written before the stitch:
- 3 hdc= work 3 hdc sts into the same stitch.
- If the number is written after the stitch:
- hdc 3= work 1 hdc into each of the next 3 sts.
- The number at the end of each row/round is the total number of stitches in that row/round.
- The pattern is written in US American crochet terms.
Save For Later (Pinterest!)
Pin the project to your favorite Pinterest board and save it for later when you have the right yarn, more time, or simply because your crochet hooks are way too busy right now. ❤️
PDF Crochet Pattern
The PDF crochet pattern is a great solution for those who prefer to work offline, need additional sizes, or just want to support my work. This beautifully designed PDF pattern is available in my shops on Etsy and Ravelry.
INSTRUCTIONS
Crochet Baby Romper – Little Cookie
Please, read the instructions carefully. Don’t skip any parts of the pattern, and make sure you do not accidentally lose or add additional stitches to the pattern. That might affect the final look of your design.
This baby romper begins with the waist ribbing. Once the ribbing is ready, you will join it together and continue working the main part of the romper in rounds.
After the main part is finished, you will shape the lower part, add ribbing around both leg holes, crochet the straps, and finish the romper with two buttons on the front.
VIDEO
Instructions
Ribbing – Waist
With Aran weight yarn and a 3.5 mm crochet hook, ch 13. Work in rows.
Row 1: Start in the 2nd ch from the hook. Work 1 sc into each of the next 12 chs.
= 12 sts.
Row 2-78: Work into BLO. Ch 1. Turn. Work 1 sc into each of the next 12 sts.
= 12 sts.
The ribbing should match the waist circumference. You can make the ribbing bigger by adding rows or smaller by removing some.
Join both ends of the ribbing together with 12 slip stitches. Work each slip stitch through the same loop on both edges, either the front loop or the back loop of the foundation chain and the corresponding stitch on the last row of the ribbing.
Do not cut the yarn. Continue with the main part.
Note: Alternatively, you can cut the yarn, thread a needle, and sew both ends of the ribbing together. Keep in mind that you will need to reattach the yarn before continuing with the main part.
Main Part
Switch to a 4.5 mm crochet hook. Ch 1. Start working horizontally and in rounds. Join each round with a ss. Do not turn after each round unless otherwise stated in the pattern.
Round 1: Work 1 sc into each row of the ribbing. Sc 78. Ss. Ch 1.
= 78 sts.
Rounds 2-8: Work 1 hdc into each of the next 78 sts. Ss. Ch 1.
= 78 sts.
Note: If you added or removed rows on the ribbing, this will change the stitch count of the main part. Make sure to include those changes in your stitch count.
Round 9: Work 1 hdc into each of the next 19 sts. Work 2 hdc into the next st. Work 1 hdc into each of the next 38 sts. Work 2 hdc into the next st. Work 1 hdc into each of the next 19 sts.
= 80 sts.
Rounds 10-11: Work 1 hdc into each of the next 80 sts. Ss. Ch 1.
= 80 sts.
Round 12: Work 1 hdc into each of the next 20 sts. Work 2 hdc into the next st. Work 1 hdc into each of the next 38 sts. Work 2 hdc into the next st. Work 1 hdc into each of the next 20 sts.
= 82 sts.
Rounds 13-14: Work 1 hdc into each of the next 82 sts. Ss. Ch 1.
= 82 sts.
You can continue repeating Round 13 to achieve the desired length of your romper.
Cut the yarn and fasten off.
Note: If your seam begins to lean instead of staying straight, you can alternate where you start each round:
- Start in the first stitch, work to the last stitch, and join with a slip stitch.
- Start in the second stitch, work around, and finish in the slip stitch from the round below, then join with a slip stitch.
This method helps keep the seam straighter by mimicking the effect of turning after each round.
Lower Part
The front and back lower parts are worked the same way. Take 4 stitch markers, two for the front and two for the back of the romper.
Fold the romper in half lengthwise. Find the middle and use it as a guide. Mark 11 sts on the front and 11 sts on the back of the romper.
With Aran weight yarn and a 4.5 mm crochet hook, join the yarn in one of the marked sts and start crocheting towards the nearest stitch marker.
Work in rows. Turn after each row.
Row 1: Ch 1. Hdc2tog. Work 1 hdc into each of the next 7 sts. Hdc2tog. Turn.
= 9 sts.
Row 2: Ch 1. Hdc2tog. Work 1 hdc into each of the next 5 sts. Hdc2tog. Turn.
= 7 sts.
Row 3: Ch 1. Hdc 7.
= 7 sts.
Cut the yarn and fasten off. Leave a long tail for sewing.
Repeat all the steps for the second panel.
Turn the romper wrong side out. Thread the needle with the yarn tail and sew both lower parts of the romper together.
Ribbing – Leg Holes
With Aran weight yarn and a 3.0 mm crochet hook, ch 9. Work in rows.
Row 1: Start in the 2nd ch from the hook. Work 1 sc into each of the next 8 chs. Ch 1. Turn.
= 8 sts.
Row 2-36: Work into BLO. Work 1 sc into each of the next 8 sts. Ch 1. Turn.
= 8 sts.
You can continue adding rows to achieve the desired length. Keep in mind that if you add rows to the ribbing, you may also need to add rows to the lower part to make the leg openings larger.
Join both ends of the ribbing together with 8 slip stitches.
Work each slip stitch through the same loop on both edges, either the front loop or the back loop of the foundation chain and the corresponding stitch on the last row of the ribbing.
Cut the yarn and fasten off. Leave a long tail for sewing.
With the romper turned wrong side out, insert one ribbing into the leg hole. Make sure the ribbing is turned right side out.
Thread the needle with the yarn tail and sew the ribbing to the main part. Stretch the ribbing gently and attach it evenly around the leg hole.
Repeat the steps one more time with the second ribbing. Turn the romper right side out.
Straps
Place the romper on a flat surface with the back side facing up.
Make sure the romper is turned right side out.
Take 4 stitch markers and mark two groups of 5 sts, with 11 sts between the groups.
One row on the ribbing equals one stitch.
With Aran weight yarn and a 3.0 mm crochet hook, insert the hook into one of the marked stitches. Attach the yarn with ch 1 and start crocheting towards the nearest stitch marker.
Row 1: Start in the same st. Work 1 hdc into each of the next 5 sts. Turn.
= 5 sts.
Row 2-33: Ch 1. Work 1 hdc into each of the next 5 sts. Turn.
= 5 sts.
Row 34: Ch 1. Work 1 hdc into each of the next 5 sts. Ch 7. Turn. Skip 4 sts. Attach the chain with a ss. Turn your work and work 10 sc around the ch-7 space.
Join with a ss made into the side of Row 34.
Cut the yarn and fasten off.
Repeat the steps for the second strap.
Buttons
The final step is to sew 2 buttons to the front side of the romper, matching the position of the buttonholes on the straps.
Place the straps over the front side of the romper and mark the button placement.
Thread the needle and sew the buttons securely in place.
Weave in all the ends.
DID YOU TRY OUT THIS PATTERN?
I’d love to know how it turned out! Please let me know by leaving a comment below. Or snap a photo and share it on Instagram. Be sure to tag me @crobypatterns.
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