Who Said It: Blair Waldorf or Chanel Oberlin?

There may only be room for one queen bee to rule the school, but there are more than enough harsh one-liners to go around. Whether they’re putting a minion back in her place or plotting the next revenge scheme, Blair Waldorf and Chanel Oberlin made being a mean girl on TV so nice.

Are you enough of a Gossip Girl fan or Scream Queens buff to correctly match the biting remark with its rightful speaker? In honor of Leighton Meester’s 30th birthday Saturday, find out, below.