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

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

Mark Ruffalo Had No Idea Brie Larson Was in 13 Going on 30

Mark Ruffalo Had No Idea Brie Larson Was in '13 Going on 30': Watch!

This Jennifer Garner and Mark Ruffalo Interview Will Make You Want a 13 Going on 30 Sequel - E! Online

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

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

Mark Ruffalo Had No Idea Brie Larson Was in 13 Going on 30

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

Mark Ruffalo Doesn't Recall Brie Larson Being in '13 Going on 30

Mark Ruffalo Had No Idea Brie Larson Was in 13 Going on 30

Mark Ruffalo Doesn't Recall Brie Larson Being in '13 Going on 30

Mark Ruffalo Celebrates 16th Anniversary Of '13 Going On 30

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

Mark Ruffalo Doesn't Recall Brie Larson Being in '13 Going on 30

Mark Ruffalo Just Learned That Brie Larson Was Also In '13 Going On 30' Before Joining The Avengers — VIDEO