Reply to DJing for 13 year old girls

Yeah I'm serious; I agreed to DJ a bat mitzvah. I've been told that the girl is into "all that techno stuff that's popular now"; I assume they didn't mean Seth Troxler or DVS1.... Honestly short of Harlem Shake and Gangnam Style I really haven't paid much attention to top 40 dance music in several years. I'm sure I have enough stuff to keep people happy but I don't want to be caught empty-handed when it comes to requests. Of course you can never predict what people will request but what's the easiest way to make sure I have the goods that 13-year old girls will be most likely to ask for? Any essential compilations for pure popular stuff that I should look into? Or suggestions of stuff I should not miss?