Chace Crawford and Leighton Meester headed to freezing Toronto yesterday to make an appearance on MTV Canada. Now that the strike is over, it's only a matter of time before these two are back to playing on-again, off-again Blair and Nate on Gossip Girl. It's one of the shows you're most looking forward to watching again, but Miss Meester has been creating a bit of buzz off-camera, too. Apparently the starlet was drawing attention to herself during some pre-Grammy partying, reeking of a certain illegal substance and accidentally flashing her panties to the crowd when a boy lifted her up. Poor form, Leighton — Blair Waldorf would never let that happen.

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