Saturday night, courtesy of Gareth Bromell (with whom she also took a photo!). fy9149 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: fy9149 which comes out December 15 and is available now topreorder on iTunes fy9149 And, who knows, maybe baby Archie will end up a redhead like his famous father — and the feisty, guitar-playingRiverdaleteen. Wow, the royals and their MINDS.Let us slide into your DMs.Sign up for theTeen Voguedaily emailWant more fromTeen Vogue? Check this out: fy9149