Haven't seen Girl on Top today -- sure hope she knows about tryouts today and tomorrow for an unspecified Jennifer Lopez video, which is sure to be fantabulous. They're over at Minc Lounge on Exposition Avenue -- and they're being sponsored by Secret, which is strong enough for a man but made for a woman, just like Marc Anthony. There's allegedly some kind of a VIP party at Minc tomorrow, connected to the tryouts. But don't expect Jenny from the block to be there -- she and the mister apparently are busy trying to make a lil' J. Lo. --Robert Wilonsky