Not my ultimate (male) fave, but definitely all of the current female pop ones I like. Excluding current Britney to be honest, but I still have fond memories(/fantasies) of early 2000s Brit.
Rihanna and Sabi, yes. Nicki Minaj, eh. She's pretty, but she's just.. I dunno. Her ass is obviously to a certain extent fake and I've never been attracted to those kind of surgeries.