Skip to top navigationSkip to shopping bagSkip to main contentSkip to product filtersSkip to footer links

Open & shop with your new Encore Credit Card & get an extra 30% off* your first purchase at Old Navy APPLY NOW

Baby Girl Onesies

Our Baby Girl Onesies sold out quickly! Explore similar styles now!
Sleeveless Double-Weave Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave Henley One-Piece Romper for Baby

$19.99$10

50% Off

Toddler & Baby Sale!
Short-Sleeve Ribbed Pocket One-Piece Romper 2-Pack for Baby
fui.swatches.fieldset_name
Short-Sleeve Ribbed Pocket One-Piece Romper 2-Pack for Baby

$34.99$20

43% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Tie-Strap One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Tie-Strap One-Piece Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Sleeveless Double-Weave One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Double-Weave One-Piece Romper for Baby

$26.99$7.99

70% Off

Clearance: Price as marked.
Sleeveless Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Sweater-Knit One-Piece Romper for Baby

$32.99

Today Only! 50% Off Original Price at Checkout
Printed Ribbed Henley Pocket One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Ribbed Henley Pocket One-Piece Romper for Baby

$16.99$8

53% Off

Toddler & Baby Sale!
Unisex Ribbed Bodysuit 3-Pack for Baby
fui.swatches.fieldset_name
Unisex Ribbed Bodysuit 3-Pack for Baby

$32.99$15

55% Off

Toddler & Baby Sale!
Printed Sleeveless Henley One-Piece Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Henley One-Piece Romper for Baby

$19.99$12

40% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Embroidered Sweater One-Piece Romper for Baby
fui.swatches.fieldset_name
Sleeveless Embroidered Sweater One-Piece Romper for Baby

$29.99$7.49

75% Off

Clearance: Price as marked.
Short-Sleeve Sweater-Knit One-Piece Romper for Baby
fui.swatches.fieldset_name
Short-Sleeve Sweater-Knit One-Piece Romper for Baby

$34.99$18

49% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Printed Sleeveless Tie-Strap Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Tie-Strap Romper for Baby

$16.99$8.49

50% Off

Toddler & Baby Sale!
Sleeveless Ruffle-Trim Romper for Baby
fui.swatches.fieldset_name
Sleeveless Ruffle-Trim Romper for Baby

$16.99$10

41% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Sweater-Knit Romper for Baby
fui.swatches.fieldset_name
Sleeveless Sweater-Knit Romper for Baby

$29.99$7.49

75% Off

Clearance: Price as marked.
Unisex Short-Sleeve Bodysuit 5-Pack for Baby
fui.swatches.fieldset_name
Unisex Short-Sleeve Bodysuit 5-Pack for Baby

$54.99$25

55% Off

Toddler & Baby Sale!
Printed Sleeveless Ruffle-Trim Romper for Baby
fui.swatches.fieldset_name
Printed Sleeveless Ruffle-Trim Romper for Baby

$16.99$10

41% Off

Card Perk! 50% Off Original Price with Code: FIFTY
Sleeveless Ruffle-Trim One-Piece for Baby
fui.swatches.fieldset_name
Sleeveless Ruffle-Trim One-Piece for Baby

$29.99$12.49

58% Off

Clearance: Price as marked.

BABY GIRL ONESIES


Discover the ultimate in comfort and cuteness with our collection of baby girl onesies. Designed for easy dressing and maximum coziness, these essential garments are perfect for your little one's everyday adventures. Made from soft, breathable fabrics, our onesies ensure your baby stays comfortable all day long, whether they're napping, playing, or exploring. With a variety of styles and colors, you can easily find the perfect onesie to match your baby girl's personality.


Our baby girl onesies feature thoughtful designs that make dressing and diaper changes a breeze. Snap closures at the bottom provide quick access for diaper changes, while expandable necklines allow for easy on-and-off. Each onesie is crafted with gentle seams and tagless labels to prevent irritation, ensuring your baby's delicate skin is always protected. These practical features make our onesies a must-have for busy parents.


Versatility is key when it comes to baby girl onesies. They can be worn alone during warm days or layered under sweaters and pants for added warmth in cooler weather. Perfect for playdates, family outings, or cozy days at home, these onesies can be styled in countless ways. Pair them with leggings, skirts, or even shorts for a complete outfit that’s both adorable and functional.


With a range of playful prints, colors, and patterns, our baby girl onesies are designed to celebrate your little one's unique style. From classic florals to fun graphics, there's something for every occasion. Shop our collection today and give your baby girl the comfort and style she deserves with our delightful onesies that make dressing fun and easy!