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Top 10
June 2025
Best Onesie 12 18 Months Girls Cotton
We made a list of the top 10 Onesie 12 18 Months Girls Cotton based on verified reviews, popularity and other factors which we summarized for you in this list.
Best Choice
1
Onesies Brand Baby-Girls 3-Pack Romper, Rainbows, 18 Months
Onesies Brand
9.6
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Includes three baby rompers
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Features inner thigh snaps & back placket for easier changes
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Made with soft, breathable cotton fabric. Perfect to wear in warm weather!
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Pair with a cute cardigan on breezy days and our adorable baby shoes!
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Purple, white & mint green with screen print floral art
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2
Touched by Nature Unisex Baby Organic Cotton Bodysuits, Garden Floral, 12-18 Months
Touched by Nature
9.5
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Made with 100% organic cotton (exclusive of decoration)
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Soft and gentle on baby's skin, made without use of fertilizers and pesticides
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Optimal for everyday use
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Set includes coordinated organic bodysuits
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Affordable, high quality value pack
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32% Discount
3
Gerber Baby Girls Multi-Pack Sleeveless Onesies Bodysuit Flowers 18 Months
Gerber
9.4
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✓
Includes 5 baby girl Onesies brand bodysuits
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Made from cotton to be gentle on sensitive skin
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Sleeveless bodysuit style to extend wear year round.
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Higher in the front snaps make for easier changes
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Fun baby girl colors: pink, gray and ivory
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16% Discount
4
Hanes Unisex Baby Bodysuits, Ultimate Flexy Sleeveless For Boys & Girls, 5-pack, Purple/Pink, 12-18 Months US
Hanes
9.3
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SHOP LESS, SPEND LESS - Get more growing time from each size. Size 0-6 fits 0 - 3 months AND 3 - 6 months; 6-12 fits 6 months, 9 months AND 12 months; 12-18 fits 12 months AND 18 months, 18-24 fits 18 months AND 24 months.
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STRETCHES TO FIT AS BABY GROWS - Lightweight, breathable 4-way stretch fabric encourages free-flowing movement and comfort as baby grows.
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EASY ON AND OFF - Expandable neckline makes it easy to pull these cute baby clothes over your little one’s head.
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BUM POUCH - A generous bottom comfortably covers a diaper or training pants.
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STURDY CONSTRUCTION - These infant sleeveless bodysuits include reinforced snaps at the bottom and a neckline that retains its shape.
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MORE QUANTITY, MORE QUALITY - Available in a convenient 5-pack of assorted colors and adorable prints.
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COLD WATER WASH - Hanes recommends washing this product in cold water to help reduce energy usage.
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HANES FLEXY - Total comfort from head to sweet little toes as your baby stretches and twiddles and fidgets and grows.
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25% Discount
5
HonestBaby Organic Cotton Short Sleeve Onesies Bodysuits Multi Pack, 5-Pack Strawberry Cream, 18 Months
HonestBaby
9.2
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100% ORGANIC COTTON: Certified by GOTS, the leading world-wide standard for products made in sustainable manufacturing facilities, without the use of synthetic pesticides, non-toxic, PVC free and without heavy metal phthalate dyes
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EASY CHANGES: Nickel-free snaps at the bottom and an envelope neck/lap neck to allow for easier, quicker changes
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FASHION & FUNCTION: Premium raw edge seams provide an updated, modern look while keeping the bulk out of the fabric for less rub on your baby's sensitive skin.
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GIFT REGISTRY-READY: These bodysuits are a wardrobe essential. Easy to dress, wear and wash, this 5-pack makes for a perfect shower gift for a new mom, new dad, or growing family
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MULTI-PACK: includes 5 short-sleeve bodysuits
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6% Discount
6
Hudson Baby Unisex Baby Cotton Sleeveless Bodysuits, Ice Cream, 12-18 Months
Hudson Baby
9.1
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✓
Set includes coordinating sleeveless bodysuits
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Made with 100% cotton
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Soft, gentle and comfortable on baby's skin
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Optimal for everyday use
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Affordable, high quality value pack
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17% Discount
7
Hudson Baby Unisex Baby Cotton Long-sleeve Bodysuits, Woodland Fox, 12-18 Months US
Hudson Baby
9.0
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✓
Set includes coordinating long-sleeve bodysuits
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Made with 100% cotton
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Soft, gentle and comfortable on baby's skin
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Optimal for everyday use
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Affordable, high quality value pack
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31% Discount
8
Luvable Friends Unisex Baby Cotton Bodysuits, White 5-Pack, 12-18 Months
Luvable Friends
8.9
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✓
Set includes coordinating bodysuits
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Made with 100% cotton
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Soft, gentle and comfortable on baby's skin
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Optimal for everyday use
✓
Affordable, high quality value pack
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34% Discount
9
Luvable Friends Unisex Baby Cotton Pants, Girl Basic Elephant, 12-18 Months
Luvable Friends
8.8
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✓
Set include four pants
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Made with 100% cotton
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Soft, gentle and comfortable on baby's skin
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Optimal for everyday use
✓
Affordable, high quality value pack
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18% Discount
10
Onesies Brand Baby Girl's 3-Pack Snug Fit One-Piece Cotton Pajamas, Dots & Kitties, 18 Months
Onesies Brand
8.7
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✓
Includes three pairs of snug fit one-piece cotton pajamas
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Features snug fit for safe sleeping all through the night
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Front zipper allows for quick & esy changes in the middle of the night
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Made with soft, breathable cotton fabric that your little one will adore
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Pink, gray, white color scheme with dots & cat art
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