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Knit Unicorn Baby Outfit Pattern

Don’t you just love unique baby outfits? The Knit Unicorn Baby Outfit Pattern is such a fun design. It turns your little one into a magical unicorn. It would be absolutely adorable for a newborn photography session.

Not only that, this knit baby pattern also includes instructions up to 18 months. This means I’ve got you covered for all those milestone photography sessions. Many knit photo prop outfits are just for the tiniest of babies but older babies look super cute in this one, too!

Additionally, you can use the Knit Unicorn Baby Outfit as your baby’s first Halloween costume. It’s also great as a baby shower gift. Have fun with this cuteness!

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Knit Unicorn Baby Hat Pattern

About The Knit Unicorn Baby Outfit Pattern

This is a two-part knit unicorn baby outfit. Part one is a super cute knit romper. It serves as not just a diaper cover but a full outfit for your little one. It’s a simple design that you could actually create without the unicorn tail just as a day wearable. Of course, that long yarn fringe tail is a lot of fun to create.

You’ll use similar yarn fringe on the knit unicorn hat to create the unicorn’s mane of hair. The hat also includes ears, a decorative flower, and the critical detail of a unicorn horn. The hat ties on at the bottom, keeping it secure on baby’s head.

Knit Unicorn Baby Hat and Romper

Knit Unicorn Baby Outfit Supplies:

Here’s what you’re going to need to complete this pattern.

Knitting Needles:

Size US 7 (4.5 mm) Circular Knitting Needles
with minimum 16” cord


H (5mm) Crochet Hook
Removable stitch markers (4)
Yarn needle to weave in ends
Fiberfill or stuffing for horn
Yarn Needle


Knit Picks Brava: 100% Premium Acrylic Worsted, 218yds/100g
In Colorways:


Newborn: 130 yds (119 m)
6 Month: 170 yds (156 m)
12 Month: 220 yds (202 m)
18 Month: 260 yds (238 m)

Knit Unicorn Baby Outfit Pattern


CO – Cast On
k – knit
kf&b – knit front and back of the stitch
k2tog – knit two stitches together
na – not applicable
p – purl
ssk – slip slip knit
yo – yarn over


20 sts and 26 rows = 4” (10 cm) in stockinette stitch

Skill Level:

Advanced Beginner


Newborn (6 Month, 12 Months, 18 Months)
Romper Laid Flat:
Top of bib to crotch: 9 (12, 13, 14) inches
Width: 6.75 (8, 8.5, 9) inches
Bonnet Laid Flat:
Height: 5.5 (6.74, 7, 7.25) inches
Depth: 5.25 (6.5, 6.75, 7) inches


This romper is worked as one piece starting in the back, working down around the crotch area, and then up the front. Using a row counter and checking stitch counts at the end of each row is recommended to ensure it works up beautifully.

Sizes are written as Newborn (6 Months, 12 Months, 18 Months)

Increasing to 5 sts: (knit in the front and the back of the stitch) twice, and then knit into the front of the stitch one more time, take off left-hand needle. Increased from 1 stitch to 5.

Helpful Links:
How To Knit a Puff Flower:
How to Increase Knitting:
How To Decrease Knitting:

Check out some of my other patterns for more inspiration:

Puppy Dog Outfit with Bone Knit Pattern
Flamingo Baby Crochet Outfit
Newborn Baby Knit Bunny Free Pattern

Get The Pattern

This knit pattern is for sale on Ravelry.

Unicorn Knit Baby Video:

I’ve created a video tutorial to help you along the way with this pattern:

Knit & TAG

I hope you have enjoyed making the Unicorn Baby Knit Outfit!

If you have made this, please share it on social media. Above all I love to see the projects created with my patterns and also share your beautiful work.

Please use #brianakdesigns or @brianakdesigns
It is much appreciated and adored!

THIS IS A PDF FILE which requires Adobe to read this pattern and can be downloaded for free at

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Don’t Lose This Project! If you aren’t ready to start it save it on Pinterest by clicking any of the images above.

Do You Crochet?

There’s a crochet unicorn baby outfit too!

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I love designing knit and crochet unicorn patterns. If you like them as well, then you might also enjoy:

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