I suppose a good way around this might be to have the designs available in baby tees and short shorts as well as regular tees and lounge-type pants...I'm sure even some of the girls who have smaller builds might be more comfortable being a little more covered up, so I'm sure some of them might like the idea of the regular tees and pants a little better. That way, while everyone could kind of mix and match what they wear, everyone would be wearing the same design. (Personally, looking from the rushee's point of view, it's a little intimidating when everyone looks the same...giving different choices for the outfits lets your individuality show a little!
) Hope this helps!