It seems rather difficult for clothing companies to accurately size their clothing. I tried to put Baby CP into this monkey suit which was sized 3 months...he can't extend his legs! According to the growth charts, Baby CP is only in the 50th percentile for height, so he's not a giant. It would make life easier if companies went with a weight or height range rather than age. There are a whole bunch of these outfits that were handed down to us that Baby CP will never wear because we missed the window of opportunity. Oh well.