Brie Larson signs a little girl's comic book and stuns in blue at 'Captain Marvel' premiere

By Hayley FitzPatrick

Brie Larson took over the red carpet at the 'Captain Marvel European Gala' in London Wednesday.

The Academy Award-winning actress and star of the film wore a custom blue Valentino Haute Couture gown that featured a cape for the European Gala screening of the film.

Larson, who will play the first solo female Marvel superhero, shared some snaps of her Captain Marvel-inspired look on her Instagram.

View this post on Instagram

A post shared by Brie (@brielarson) on Feb 27, 2019 at 2:22pm PST

The gown's colors closely resembled her character's iconic Captain Marvel costume.

Dave J Hogan/Getty Images

Brie Larson attends the "Captain Marvel European Gala" held at The Curzon Mayfair, Feb. 27, 2019, in London.

While on the carpet, Larson signed 8-year-old Illie's comic. The young girl dressed in a Captain Marvel costume for the big premiere.

Larson shared a snap of the special moment on her own social account, captioning the image, "I did it for you, superstar."

View this post on Instagram

I did it for you, superstar

A post shared by Brie (@brielarson) on Feb 27, 2019 at 4:22pm PST

Illie was there with "The Female Lead," a nonprofit dedicated to highlighting female roles in film.

She interviewed Larson and another star of the film, Samuel L. Jackson, along with the film's directors, Anna Boden and Ryan Fleck.

View this post on Instagram

Just two captain marvels ?? We arranged for 8 year old superstar Illie to meet her real life superhero @brielarson at the #captainmarvel premiere this evening ! . . It’s always been about this!??Follow us to be the first to see the full video next week! . . #captainmarvel #captainmarvelpremiere #brielarson #judelaw #samuelljackson #annaboden #comic #disney #disneyuk #marvel #marvellegends #marvelcomics #inspiration #imwithher #positivevibes #kindness #change #picoftheday #yesallwomen #everydayfeminism #metoo #makinghistory

A post shared by The Female Lead (@the_female_lead) on Feb 27, 2019 at 2:29pm PST

"We chose Illie as our mini Captain Marvel so she could meet her real life superhero @brielarson. You can’t be what you can’t see! By meeting role models young people start to believe in their own power,” said Edwina Dunn, founder of The Female Lead, according to an Instagram post.

Someone's had a good night... #CaptainMarvel pic.twitter.com/o1jcc1BDpt

— Marvel UK & Ireland (@MarvelUK) February 27, 2019

While at the premiere, Larson also posed with women from the UK Armed Forces. She told "Good Morning America" in 2018 why she wanted to take part in the film.

"I think what brought me to this film was Carol," Larson said. "She's so inspiring and incredible and so to have the opportunity to play a role like this is amazing and I hope just a little bit of her amazingness and strength can rub off onto me."

View this post on Instagram

A post shared by Marvel Studios’ Captain Marvel (@captainmarvelofficial) on Feb 27, 2019 at 5:39pm PST

"Captain Marvel" hits theaters on March 8.

Disney is the parent company of Marvel and ABC News.