Washington, Dec. 29 -- Actor Timothee Chalamet marked his 30th birthday with a nostalgic social media post and a surprise musical tribute from Britain's Got Talent alum Susan Boyle, according to People.

The actor recently celebrated the milestone by sharing a series of throwback photographs on Instagram, including childhood moments playing soccer and ping-pong, a photo with his father, Marc Chalamet, and recent images of himself wearing a shaved head while swimming.

"THANK U FOR THE BIRTHDAY WISHES THANK U THANK U THANK U!!!!!! TIMMYTIM IS OFFICIALLY UNC #uncletimmytim," Chalamet wrote, referencing the slang term "unc," commonly used to jokingly describe someone as getting older, according to People.

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