Mark Ruffalo Had No Idea Brie Larson Was in 13 Going on 30 — Watch His Hilarious Reaction

Mark Ruffalo Finding Out That Brie Larson Was In 13 Going On 30 Is Absolutely Amazing

Mark Ruffalo Had No Idea That Brie Larson Was In 13 Going On 30 With Him

13 Going on 30 Star Mark Ruffalo Didn't Know Brie Larson Was Also in It

Brie Larson Was In '13 Going On 30,' So She Goes *Way* Back With Mark Ruffalo

Brie Larson Was in '13 Going on 30' With Mark Ruffalo, and We're FREAKING OUT

Mark Ruffalo Admits He Had No Idea Brie Larson Was in '13 Going on

Mark Ruffalo Had No Idea Brie Larson Was In 13 Going On 30

Watch Mark Ruffalo Find Out That Brie Larson Was In 13 Going on 30 HelloGiggles

Mark Ruffalo is stunned to find out Brie Larson had a role in his 2004 hit film 13 Going On 30

Mark Ruffalo Admits He Had No Idea Brie Larson Was in '13 Going on 30' (Exclusive)

Mark Ruffalo Admits He Had No Idea Brie Larson Was in '13 Going on