Tom Hiddleston Responds to Robert Downey Jr. Poking Fun at His 'I Heart T.S.' Shirt With a Little Love!

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Turns out, Tom Hiddleston IS a big T. Stark fan, after all!
The Avengers actor proved he can take a little teasing on Wednesday while addressing his co-star Robert Downey Jr. welcoming him to Instagram this week by poking fun at that 'I Heart T.S.' shirt he wore at the start of his his whirlwind romance with Taylor Swift.
"Join me in welcoming the biggest T. Stark fan of them all to Instagram!," Downey Jr. wrote, referencing his Avengers character, Tony Stark aka Iron Man, who bares the same initials as Hiddleston's pop superstar bae.

"We're very close," Hiddleston said during a Facebook Live Chat with the Los Angeles Times. "There's a lot of mutual affection."
The 35-year-old actor shared that he and 51-year-old Downey Jr. bonded while working together on The Avengers, and have a lot of "mutual admiration" for one another.
"It's great, he's very sweet," Hiddleston added with regard to the lighthearted dig.
Meanwhile, Downey Jr. echoed this sentiment on Wednesday, when he followed up his initial Instagram with a pic of Tony Stark showing off his affection for Hiddleston's Marvel character with an "I Heart Loki" tank top.

There's just so much superhero BFFing going on right now!
Watch the video below for more on Hiddleston's Instagram debut.