Mick Jagger, Tom Ford, Chris Rock, Cindy Crawford, and Pharrell, among other celebs. LL Cool J performed. (You know, casual.) Tay also cheesed-it-up alongside James Corden (could this mean a "Carpool Karaoke" soon?!), Mary J. Blige, and OG squad members Haim sisters.Taylor alsodebuted a new haircut ridge cycle helmet with light Through it all, the group has its eyes on the prize. "The ultimate goal of the council is to give youth a voice in government and address what’s important in their community," James says.Related: ridge cycle helmet with light that Jennifer wore a Dior gown, so we can only imagine it was just as elegant as the rest of her red carpet wardrobe. Congrats to J-Law and Cooke!Want more fromTeen Vogue? Check this out: ridge cycle helmet with light As Paige and Rainer are working things out, Tangey is about to perform onConan ridge cycle helmet with light