Timothee Chalamet seemed to be gobsmacked by his age as he shared a humorous post to mark his 26th birthday.

The Dune actor took to Instagram on Monday to express his shock at turning another year older, as he remarked ‘I’m 26?!’ while sharing a selfie.

Timothee looked to be enjoying a lowkey celebration at home with his family, but received tributes from friends who wished him well.

What’s my age again?! Timothee Chalamet seemed to be gobsmacked by his age as he shared a humorous selfie on his 26th birthday

The Oscar-nominated actor posted a selfie wearing a purple sweatshirt which looked to be taken in his family kitchen.

He showed off light facial hair and his usual head of flowing brown locks while staring deadpan into the camera.

The Little Women star took to Instagram to re-post tributes from friends including Kiernan Shipka who gushed ‘happy birthday king @tchalamet I love youuu.’

Fashion designer Haider Ackermann — who Chalamet recently collaborated with on a sweatshirt to support the humanitarian crisis in Afghanistan — also celebrated him.

‘Happy birthday king’: Mad Men actress Kiernan Shipka paid tribute to Chalamet as she posted a photo of them from years back

Creative collaborators: Fashion designer Haider Ackermann – who Chalamet recently collaborated with on a sweatshirt to support the humanitarian crisis in Afghanistan – also celebrated him

It’s a party! He additionally shared another snap of his lowkey celebration with his older sister Pauline Chalamet, 29, in a festive party hat

Though Chalamet sparingly posts on social media he additionally shared another snap of his lowkey celebration with his older sister Pauline Chalamet, 29, in a festive party hat.

The Lady Bird actor has been hard at work filming the Willy Wonka prequel film: Wonka in the UK since October.

The musical adaptation of Roald Dahl’s classic children’s book will focus on a young Willy Wonka’s adventures, before he became a chocolatier.

The casting makes Timothee the third actor to portray Willy Wonka on screen following Gene Wilder in the 1971 film and Johnny Depp in the 2005 flick.

In November production shut down for five days after one of the stars tested positive for COVID-19, but the name of the cast member was never made public.

Stacked roster: The Lady Bird actor has been hard at work filming the Willy Wonka prequel film, Wonka in the UK since October and will be the third actor behind Gene Wilder and Johnny Depp to tackle the part; pictured October 17