Robert Downey Jr. Welcomes Tom Hiddleston to Instagram by Trolling His Co-Star's Custom Taylor Swift Tank

Taylor Swift and Tom Hiddleston

Taylor Swift and Tom Hiddleston at LAX International Airport in Los Angeles on July 6, 2016. 

Robert Downey Jr. is legendary for his on-set pranks. But on Tuesday he took the teasing to Instagram when he trolled his Avengers co-star Tom Hiddleston just hours after the Thor actor announced his debut on the photo-sharing service. "He's back!" Hiddleston wrote on his first (and so far only) post alongside a winking, metal horns-throwing selfie.   

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He's back!

A photo posted by Tom Hiddleston (@twhiddleston) on


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Downey was super psyched for his pal (who already has more than 500,000 followers), so he re-posted the infamous pic of Hiddleston sporting his custom "I Heart T.S." tank top from the 35-year-old British actor's fourth of July getaway with girlfriend Taylor Swift. The caption said it all: "Join me in welcoming the biggest T.Stark fan of them all to Instagram!" 



Join me in welcoming the biggest T. Stark fan of them all to Instagram! @twhiddleston

A photo posted by Robert Downey Jr. (@robertdowneyjr) on




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