Gossip Girl star Leighton Meester joins Weezer on stage during their Halloween concert at Hammerstein Ballroom in New York City on Saturday (October 31).
Leighton helped Rivers Cuomo sing Weezer’s new single “(If You’re Wondering if I Want You To) I Want You To).” Nat Wolff from the Naked Brothers Band also joined in on guitar!
Later, Leighton tweeted that Rivers was “perfection in a bottle.”
Check out the concert footage below –
Leighton Meester & Weezer: Concert Video Footage!

















