R.W.
My girls are 21 and 23 and they comment on a lot of the dance moves on So You Think You Can Dance. They say things like "that's sick" "why do they have to do that" "there's to much sex on the show", ect.... If girls this age make commnets like that it should tell you it is no show for little ones to watch. You need to screen what she sees.
But honestly, you need to think about who she has been with because I don't think she got all that from a dance show. My guess would be an Uncle, cousin, neighbor or someone has had their shirt off around her and has had her take her shirt off. But for sure I would be more careful about what she watches for now on.