George Clooney beams as he rings in his 63rd birthday with cake and balloons alongside co-star Adam Sandler plus crew members on the set of their movie in Italy

George Clooney was grinning from ear to ear during his surprise birthday celebration while on the set of his new movie in Tuscany, Italy.

The actor was spotted at his birthday party on Monday – on his actual birthday – as he turned 63.

George is currently filming the Noah Baumbach project with Adam Sandler, who he was recently seen playing basketball with between takes.

The movie star was spotted taking photos with cast and crew members in front of his birthday cake – which featured balloon decorations and birthday signs.

George Clooney grinned from ear to ear during his surprise birthday celebration while on the set of his new movie in Tuscany, Italy

The actor was spotted at his birthday bash on Monday – on his actual birthday – as he turned 63;  The movie star was seen taking photos with cast and crew members in front of his birthday cake - with balloon decorations and birthday signs

The actor was spotted at his birthday bash on Monday – on his actual birthday – as he turned 63; The movie star was seen taking photos with cast and crew members in front of his birthday cake – with balloon decorations and birthday signs

George was seen talking to cast and crew members on his birthday

George was seen talking to cast and crew members on his birthday

Cast and crew members with George as they celebrated him

Cast and crew members with George as they celebrated him

The star stayed warm in a black jacket over his matching shirt

The star stayed warm in a black jacket over his matching shirt

The movie star was seen smiling and greeting cast and crew members who surprised him with the birthday festivities.

George ate a chocolate and vanilla cake with a cold drink in a room with a balloon arch.

In Italy there was also a birthday sign on the wall that said Buon compleanno, which means Happy Birthday in Italian.

Adam was also at the festivities; the star, who wore a red hoodie and blue pants, was celebrated with his co-star.

Previously, he was seen playing basketball in the same outfit.

George was seen enjoying a birthday drink as he left the party.

In Italy there was also a birthday sign on the wall with the text Buon compleanno, which means Happy Birthday in Italian

In Italy there was also a birthday sign on the wall with the text Buon compleanno, which means Happy Birthday in Italian

Adam was also at the festivities;  the star, who wore a red hoodie and blue pants, was celebrated with his co-star

Adam was also at the festivities; the star, who wore a red hoodie and blue pants, was celebrated with his co-star

The actor was spotted at his birthday party on Monday - on his actual birthday - as he turned 63

The actor was spotted at his birthday party on Monday – on his actual birthday – as he turned 63

Previously, he was seen playing basketball in the same outfit

Previously, he was seen playing basketball in the same outfit

Fans were seen waiting to take a photo of Adam as he took a break from filming;  he was also chatting with some fans

Fans were seen waiting to take a photo of Adam as he took a break from filming; he was also chatting with some fans

George was seen enjoying a birthday drink as he left the party

George was seen enjoying a birthday drink as he left the party

George was seen hugging a crew member on set on his birthday

George was seen hugging a crew member on set on his birthday

George was balancing on two drinks, although one could have been for a friend

George was balancing on two drinks, although one could have been for a friend

George was seen talking to someone on set

George was seen talking to someone on set

The beaming movie star seemed to have enjoyed his birthday party

The beaming movie star seemed to have enjoyed his birthday party

George and Adam star in the film alongside Riley Keough, Billy Crudip, Laura Dern, Patrick Wilson and Isla Fisher.

The film, directed by Noah Baumbach, is currently untitled.

A source said People that he played a game of basketball with co-star Adam on his birthday: ‘George was in a happy, cheeky mood. They were laughing and messing around on the chair.”

Adding: ‘They were both in good spirits.’

‘George always makes it fun on set. Some of the Italian crew have filmed with him in the past. Everyone loves him,” the insider added.

George and his wife Amal Clooney, 46, will celebrate the seventh birthday of their children, twins Ella and Alexander, next month.

George and Amal got married in 2014.