#1 Miss Congeniality was the name of a film, where an undercover policewoman entered a beauty pageant of the same name - and won, as the most congenial contestant (not necessarily the most beautiful, in this case)! I am not aware of an actual contest under the same name, although there could be, as a spin off from the film.
#2 "lift and separate": There used to be (and possibly still is*) a bra that was specifically designed to "lift and separate" and hence, supposedly, make a woman look more attractive.
#3 "turn heads": It was supposed to make men look at her (i.e. turn their heads) and think how beautiful she was, but suggests that when they turned their heads they would think: "Hmmmm?"
*I'm afraid I've been out of the UK for some years now and leave that side of shopping to my dear wife!
Student or Learner