Let’s talk Baby patterns!
You may be entering the stage of life where there is lots of baby knitting happening. Whether you are going to be a Grandparent, Aunt, Mom or just a special friend of an expectant Mom, here are some great pattern ideas for you to knit.
You might call these rompers or onsies, or even overalls. They are all really cute, pretty quick to make, and something the new mom will treasure. I have been diving into romper patterns and I want to share my 10 favorite one piece patterns.
Waterfall Romper by Aethalia O'Connor
This pattern is knit in DK and uses size 4 US, 3.5 mm needles and is sized from small newborn to 9- 18 month. 5 sizes. The pattern is available in English. The price is 10 NZD, which is 5.93 US.
The Waterfall romper will soon become your go to knit for a new baby with its simple intuitive design. It is perfect for year-round wearing, use cotton yarn for summer and wool yarn for winter.
This pattern is worked from the bottom upwards. The front and back bottoms are worked flat separately before being joined to work in the round for the body section. The work is then split again to work the top front and back sections flat before finishing with the shoulder straps.
This can be for a girl or a boy, but I think this is a really good option for a little boy.
https://www.ravelry.com/patterns/library/waterfall-romper
Palheiro Baby Playsuit by Sandra Magaheas
This cute onsie was published this year, July 2025. It is knit in sport weight yarn on size 4 (3.5mm) & size 2.5 (3.00 mm) needles.
I love the stripping pattern, but of course you could also do this as a solid or a solid as the main color with contrasting borders.
The Palheiro Baby Playsuit is a comfortable piece with a casual style! Inspired by the traditional Aveiro houses painted with stripes, in the north of Portugal, this design also reminds me of the retro swimsuits from the 1920s.
This playsuit is knitted in the round and in stockinette stitch, from the bottom up.
All the edges are picked up and knitted afterwards in garter stitch.
The instructions are written, but there is also a video tutorial. It is sized from Premie to 24 months and is available in English & Portuguese. The price is 4 Euros or $4.86, but there is a sale right now on the Etsy shop, 25% off if you buy 4 items.
Sandra has an Etsy shop, Agasalhos e Bugahos, https://www.etsy.com/listing/4330592945/palheiro-baby-playsuit-knitting-pattern?etsrc=sdt
Darcy Baby Romper by Sandra Magalhaes
This pattern is from May of 2025. Darcy is also knit with sport weight yarn and size 4 US/ 3.5 mm needles.
The Darcy Baby Romper is a comfortable piece with an original and timeless design.
It is knitted from the bottom up, in garter stitch, featuring a cute pleat in the chest.
There are instructions to knit the romper flat or in the round.
There are written instructions and a video tutorial. Sizes 2 premeie sizes to 24 month. The price is 4 Euros or $4.86, but there is a sale right now on the Etsy shop, 25% off if you buy 4 items.
https://www.etsy.com/listing/4300164364/darcy-baby-romper-knitting-pattern-pdf?etsrc=sdt
Willum's Overalls by Petite Knit
Willum's Overalls are knit in Sport weight yarn using US 2.5/3 mm needles. The overalls are worked bottom up. The legs are worked on double pointed needles and the body is worked in the round on a circular needle.
Sizes 2-4 months to 3-4 years old, 8 sizes. Price is 50 Danish Kroners which is about $8.13 US.
https://www.petiteknit.com/en/products/willums-selebukser
Monday Suit by Petite Knit
The Monday Suit is worked from the top down with raglan increases on the yoke and a button placket along the left front raglan. The button placket continues down the body and slants in towards the crotch. The yoke and body are worked back and forth on a circular needle, while the sleeves and legs are worked in the round either on double-pointed needles or on a circular needle using the Magic Loop technique.
Size 1.5 US/2.5 mm circs and dpn’s, Sized from 0-1 month to 12-18 months. The price is 50 Danish Kroners which is about $8.13 US.
https://www.petiteknit.com/en/collections/baby/products/monday-suit
Lacey Romper by Pippy Eve
This one is in Cascade Ultra Pima, which is DK. The needles are Size 6 US/4 mm needles and the sizes available are 3 months to 18 months, 4 sizes total.
Lacey is a sweet baby romper, designed to be easily knit in just two pieces. It is a clever combination of vintage design and more modern use of stocking and garter stitch, creating a timeless romper. There are instructions for two different stitch patterns for the central panel – chevrons and diamonds – which are easily integrated into the instructions.
The romper is knitted bottom up and features a three-button fastening at the crotch and over the shoulder straps with button fastenings at the front.
This pattern is in English and is 4 British Pounds, which is $5.51 US
Pippyeve is on Etsy and like most designers of baby patterns, she has so many cute choices of baby patterns.
Ruffle Romper by Pernille Larsen for Knitting for Olive
Fingering weight yarn on US 1.5 and 2.5, which is 2.5 and 3 mm needles.
This pattern is available in English and 7 other languages, and is sized 3 month to 24 months, and there are 4 sizes. The price is 50 Danish Kroners, which is $8.13 US.
Ruffle Romper is a simple romper featuring a decorative ruffle on the yoke. It is worked from the top down in stockinette stitch using 1 strand of Merino, Cotton Merino or Pure Silk. The romper can be knit with or without sleeves - a Merino version with sleeves for fall and winter, and a Cotton Merino or Pure Silk version without sleeves for spring and summer for example, would be lovely.
The first part of the yoke is worked back and forth to create the keyhole opening at back neck. Afterwards, the body is worked in stockinette stitch in the round down to the crotch where front and back crotch are worked separately back and forth. The optional sleeves are worked in the round from the top down. Stitches are picked up around the yoke for the ruffle and the ruffle subsequently worked in the round. Sleeve length can easily be adjusted.
Little Fern by DROPS
This is a free pattern and comes in English and 15 other languages. The sizes are 0-1 month to 2 years old, 5 sizes. Little Fern uses sport weight yarn 2.5 US/ 3 mm needles.
This cute romper is mostly stockinette but has a cute garter stitch pocket on the front. From the pictures, I thought there were no buttons at the crotch, but this pictures shows that there actually are buttons. The pattern is top down and is knit flat, front and back separately until the underarms, then worked in the round.
The pattern is written and they also have video tutorials for all of the techniques used in the pattern.
https://www.garnstudio.com/pattern.php?id=11346&cid=19
Tiriltunge Newborn Onsie by Shja
This pattern is 50 Norwegian Kroners, which is $5.22. Tiriltunge uses fingering weight yarn and uses US 2.5 and 1.5, which is 3 mm and 2.5 mm. The pattern is available in English, German, Norwegian and Russian. She does not have a website or and Etsy store, so it looks like this one is only available on Ravelry.
Sizes are 0-3 moth – 18-24 months. This is a completely new and revised pattern. New sizes have been added and the pattern is now sized from premature up to 24 months.
The pattern includes a new chart that covers the entire front and back panels. It has clear instructions including photos to help you knit this beautiful onesie.
Note however this is not a pattern for the faint of heart, it requires intermediate knitting skills and a clear head. There are a lot of details in this pattern and being knit all in one piece saves you the trouble of seaming, but it can be a bit tricky to get started.
The pattern is knit top down using raglan increase and the sleeves are knit on double pointed needles.
https://www.ravelry.com/patterns/library/tiriltunge-newborn-onesie-nyfdtbod
Lille Dahlia by Lene Holme Samsoe of Le Knit
Lille Dalia Solo is a pattern with a series of baby and child clothes, which features the Dahlia pattern. The beautiful leaf pattern has a wonderful texture due to the purl stitches.
The pattern contains directions for a pullover, a top, a cardigan, a dress, and a onesie, an is available in English, German, French, Spanish, Slovak and Swedish.
The yarn needed for this pattern is fingering weight and uses US 2.5 and 1.3, 3 mm and 2.5 mm.
The price on this on is 60 Danish Kroners, which is $9.75, but the pattern includes not only the onsie, but also a pullover, a cardigan and a dress!
There are 5 sizes, 0-3 month to 4 years old.
https://leknit.com/shop/lille-dahlia-english-207p.html
I hope you enjoy these patterns. If you would like to watch the YouTube video about the patterns, that is available here.