OK, so Kate Moss didn't do Tina Turner or Cher (well, it is a girl's prerogative to change her mind at the last minute), but she made a mean Catwoman at Heidi Klum's Halloween party this weekend. Grrr. Her leather leggings, cats-eye mask and exposed toned mid-riff not only looked like it was to prove she's anything but pregnant, but that she's the only A-lister who can dress like a sex kitten for Halloween - and get away with it. But what do the other A-list Halloween costumes mean? Check out - and rate - who was wearing what this weekend below.