So cute!!! I wanted a rash guard to provide my baby extra sun protection, while also being a two piece for easy and quick diaper changes. Infant swimsuits all seem to fit small, and this one is no different. I ordered size 12 month for my 5 month old, granted she's in the 90th percentile for nearly everything. Just something to keep in mind. I didn't know this when I ordered, but the fabric has SPF 50. A very nice surprise!