From Longman Dictionary of Contemporary Englishlookerlook‧er /ˈlʊkə $ -ər/ noun [countable] informalBEAUTIFUL/GOOD-LOOKING someone who is attractive, usually a woman
Examples from the Corpus
looker• She was not a looker, but her Hard Number pose turned him on somehow.• She was a looker, that one, and I guess it went to her head.• She must be pushing forty, he thought, but she's still a good looker.• She was a good looker, if a bit flighty for these parts.• You spot this hot looker across the room, this real babe, so you wander over and start politicking.• And there's no getting away from it, he's a real looker. 