The response to Brie Larson being cast as Captain Marvel has been overwhelmingly positive, a rarity these days thanks to a very vocal fanbase on social media. Given Larson's track record (she won an Oscar earlier this year for an incredible performance in Room), it's easy to see why she's been embraced as the first big screen Carol Danvers, and the actress has taken to Instagram to thank fans.It's a heartfelt message, and Larson has been interacting with fans a lot on Twitter and Instagram since the announcement was made on Saturday. With Captain Marvel not set to be released until 2019, it remains to be seen when exactly we'll get to see her in action on the big screen, but with Avengers: Infinity War expected to start shooting later this year, it will hopefully be sooner rather than later...