She shut down the red carpet alongside Beyoncé, who wore Balmain.
The new live-action film released a teaser trailer and will be in theaters on December 20.
The Carter family cheers on Beyoncé's mother Tina Knowles-Lawson in the theme song for her new Facebook Watch series Talks With Mama Tina.
Watch the Carter family recreate an iconic moment from Audrey Hepburn's Breakfast at Tiffany's.