Hotter Luisana Lopilato or Britney Spears?
Luisana Lopilato for Ultimo
Celebs aren't afraid to get a little sexy when it comes to ad campaigns. Whether they're flaunting their curves in sizzling lingerie or showing off their modeling chops in sultry high-fashion shoots, these celebrities are so hot you'll forget what it is exactly they're trying to sell. Check out the sexiest star advertisements...
