It's interesting different gym's philosophies. I notice (just from what I've seen from practice while my dd is in her class) that our team girls wearing leos and sometimes the little shorts over. I've never seen team girls in t-shirts/shorts. I have no idea if there is an official "policy". Though in the advanced/pre-team classes I see girls not wearing leos, which is strange to me. There is a little girl in dds class who often wears baggy long shorts and a baggy t-shirt (as in shorts that are loose and come below the knee - more capri length). She wore a leo one day, and I was amazing how good her body positions were, but you can't tell on a normal day with all those baggy clothes. Rec kids are about half leos, about half whatever clothes. I've seen little girls in dresses too. I think the only rule they enforce in the rec classes is no jeans...