Sheldon wears a lot of awesome shirts on The Big Bang Theory, but if you really want to be a fanboy, this is the one that will set you apart from all the rest! This officially licensed shirt is worn by Sheldon several times over the course of several seasons, making it a perfect choice for any fan of the show. Season 2, Episodes 2 (The Codpiece Topology), 11 (The Bath Item Gift Hypothesis) and 16 (The Cushion Saturation); Season 3, Episode 23 (The Lunar Excitation); and Season 4, Episode 2 (The Cruciferous Vegetable Amplification). Mens Purple 100% Cotton Officially Licensed Standard Fit More 'The Big Bang Theory' items: The Big Bang Theory Merchandise Size chart