Brie Larson is a woman of her word. The actress behind Marvel’s latest fan-favorite superhero Captain Marvel posted a picture on Instagram on Wednesday of her holding Thor’s famous hammer, Mjölnir.

Brie Larson is widely regarded as “pretty cool,” mostly because she tends to do things that are pretty cool. She was in Scott Pilgrim Vs. The World, she was in a Jenny Lewis video, she was in a ...