Chris Hemsworth, Tessa Thompson, And More Celebrate Robert Downey Jr.’s 54th Birthday

Chris Hemsworth and Tessa Thompson are wishing Robert Downey Jr. a very happy 54th birthday.

The two posted a short video from the set of “Men In Black: International”, explaining the formal attire was not for their role in the sequel but rather, in honour of Downey’s birthday.

RELATED: Chris Evans Wants ‘Avengers’ Co-Star Robert Downey Jr To Host Oscars

Hemsworth and Thompson were not the only celebs to send their best wishes. “Avengers” co-star Mark Ruffalo shared a shot of Downey giving him a peck on the cheek.

Chris Evans also wished his “Avengers” co-star well on the momentous day.

And Mindy Kaling wished Downey a great birthday with a picture she is sure he has “framed” at his house.

RELATED: Robert Downey Jr. Wants To Know ‘Who Wore’ The Moustache Best: Him, Mark Ruffalo, Or Chris Evans

Numerous other stars also turned to social media to wish the actor a happy 54th.

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HAPPY BIRTHDAY to my brother in arms! @robertdowneyjr #avengersendgame #presstour #cutomorrow

A post shared by Jeremy Renner (@jeremyrenner) on Apr 4, 2019 at 12:19pm PDT

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Happy Birthday @robertdowneyjr I love you to the moon and back. Love, your 🌶

A post shared by Gwyneth Paltrow (@gwynethpaltrow) on Apr 4, 2019 at 7:08am PDT

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What happened next is history. To a mentor on and off screen, happy birthday boss man. Hope you have a wonderful day #teamstark

A post shared by Tom Holland (@tomholland2013) on Apr 4, 2019 at 7:11am PDT

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A very happy birthday to @robertdowneyjr 🤗 #robertdowneyjr #ironman

A post shared by Tobey Maguire (@tobeymaguir) on Apr 4, 2019 at 2:17pm PDT

Downey even celebrated his own birthday with a puzzle for his fans. Can you solve it?