Scarlett Johansson and Her SNL Boyfriend Made Their Red Carpet Debut

Scarlett Johansson and Colin Jost just made their relationship red carpet official. The actress and the SNL "Weekend Update" host attended the premiere of Avengers: Infinity War in Los Angeles, marking their first red carpet event as a couple. The newly brunette Johansson wore a metallic Erdem dress and simple black ankle-strap pumps for the occasion, while Jost was classic in a sharp black suit. How cute are they?

Elsewhere on the Avengers red carpet, Gwyneth Paltrow stunned in a gold minidress, Zoe Saldana perfected laid-back cool in trousers, and Brie Larson went for an all-white look. Scroll down to see what everyone wore to the premiere.

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

WHO: Scarlett Johansson and Colin Jost

WEAR: On Johansson: Erdem F/W 18 dress

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

The Rest of the A-List Red Carpet

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

WHO: Gwyneth Paltrow

WEAR: Retrofête dress

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(Image credit: Getty Images)

WHO: Elizabeth Olsen

WEAR: Oscar de la Renta F/W 18 sweetheart neck bustier top with gazar sash and pants

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

WHO: Zoe Saldana

WEAR: Givenchy ivory long sleeves top with black bow in crepe envers satin, high waisted trousers in dry wool suiting, and black calf leather sandals

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

WHO: Brie Larson

WEAR: Christian Louboutin shoes

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

WHO: Danai Gurira

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(Image credit: Greg Doherty/Patrick McMullan via Getty Images)

WHO: Angela Bassett

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Associate Director, Fashion News

Erin got her start as a Who What Wear intern over 13 years ago—back when the site only published a single story per day. (Who What Wear has since increased that number twentyfold.) She graduated magna cum laude from USC, which is how she ended up moving to Los Angeles from her hometown of San Diego. In college, she also interned at Refinery29, where she was promoted to editorial assistant and then assistant editor. After nearly three years at R29, she came back to WWW in 2016, where she currently holds the title of Associate Director of Fashion News (as well as the unofficial title of resident royal expert—in case you haven't noticed her numerous Meghan Markle and Kate Middleton stories). She spends her days trying to incorporate her idols, Anna Wintour and Roger Federer, into as many stories as possible. Outside of work, she loves tennis, classic rock, traveling, and smothering her dog with affection.