Scarlett Johansson & Colin Jost Make Red Carpet Debut at 'Avengers: Infinity War' Premiere

Scarlett Johansson and Colin Jost just stepped out as a couple for the first time!

The cute couple made their red carpet debut at the Avengers: Infinity War premiere on Monday night (April 23) in Los Angeles.

PHOTOS: Check out the latest pics of Scarlett Johansson

Scarlett and Colin began dating last May when they were spotted hang out at a Saturday Night Live after party.

They were also joined at the event by Brie Larson and her fiance Alex Greenwald.

FYI: Scarlett is wearing Erdem dress, Jimmy Choo shoes and Messika jewelry. Brie is wearing Tiffany & Co. jewelry.