AceShowbiz - Scarlett Johansson commanded attention at the London premiere of "Avengers: Endgame" on Wednesday, April 10. The actress, who reprises her role as Natasha Romanoff a.k.a. Black Widow, looked fierce and sexy while hitting the blue carpet at London's Picturehouse.

The blonde beauty bared cleavage in a black tuxedo jumpsuit with a plunging cut-out neckline. Luckily, her wardrobe team did a good job in keeping the asymmetrical top attached to her left chest, avoiding potential nip slip.

Johansson completed her look with a pair of black stilettos, dangly earrings and a bold, gold bracelet. Her hair was arranged in a sleek up do, while she added a swipe of maroon lipstick.

While the team didn't come full force for the fan screening, Johansson wasn't alone that night. She was joined by her co-stars Chris Hemsworth and Paul Rudd. The Thor depicter looked dapper in a three-piece outfit with a navy tartan blazer and matching suit paired with brown shoes, while the "Ant-Man" star rocked a white shirt and a burgundy checked suit with matching shoes.

Speaking to Daily Mail, Hemsworth addressed fan speculations that the movie would feature a romantic storyline between his character and Brie Larson's Captain Marvel. "I mean they're clutching at straws at this point because they haven't seen much, but just from the trailer that was released recently Thor and Captain Marvel have a brief interaction so immediately people say 'oh there's a relationship,' " said the Aussie hunk, "but I don't think we have time for a love story in this particular film, maybe a laugh!"

Thank you to all the fans who came out to the @Avengers event in London. The enthusiasm and support for these films is incredible and we’re all beyond appreciative #Endgame@MarvelStudios@Marvel 🙏🙏👍👍👍👍👍 pic.twitter.com/x0yF2cAs1A

— Chris Hemsworth (@chrishemsworth) April 10, 2019

Also spotted at the event were directors Anthony and Joe Russo. The fivesome took time to pose with fans cosplaying to mimic their favorite Avengers for the event.

"Avengers: Endgame" will open in theaters worldwide on April 26.