One Lil Rebel Onesie. Choose from 6, 12, 18, or 24 month sizes. Celebrate your little wild child with our super cute Lil Rebel Onesie! This baby blue onesie features angel wings and punky lettering that lets everyone know who'll steal your heart (and maybe some cookies, too.) Be sure to browse our rad selection of Baby Shower and 1st Birthday Party Supplies, featuring tableware to decorations.