11 of 13 people found the following review helpful
sizes run SMALL,
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This review is from: Gerber Unisex Baby 4 Pack Onesies (Apparel)
I have purchased Gerber onesies in every size since preemie. They make a great base for layering in colder weather, and are easy to throw on when we are hanging around the house. They are soft and hold up well to washes. However, the onesies run extremely small. My 6 month old is a very average size (17 lbs, 27 in) and comfortably fits into the 12 month size. Order one or two sizes bigger than you think you need.