Dame Joan Collins, 88, was out on the town for a star-studded party with Amanda Holden, 51, and Simon Cowell, 62. The Brits dined at a popular West Hollywood Italian restaurant, Cecconi’s, to celebrate talent manager Jonathan Shalit’s 60th birthday.

The stars documented their evening with a series of snaps posted to Instagram.

Dame Joan shared a photo of the trio on Sunday to her 273,000 followers.

The Dynasty star sat in between the Britain’s Got Talent judges looking glamorous in a black midi dress with her hair perfectly styled and her trademark red lipstick.

Amanda dazzled in a glitzy pale pink jumpsuit while Simon wore a black jumper and a wrist brace following his second bike accident in February.

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Joan captioned the post: “Three Brits in Hollywood @cecconisrestaurants for Jonathan Shalit’s birthday with @noholdenback and @simoncowell #happyeaster.”

Also in attendance was former Tottenham Hotspur Vice-Chairman Paul Kemsley and his wife, Real Housewives of Beverly Hills star Dorit Kemsley.

The fancy restaurant had a selection of Italian food on the menu including tuna tartare to start followed by beef porterhouse with truffle potatoes and chocolate coppa to finish.

During Jonathan’s long-running career, his clients have included Joan, Simon and the winners of Britain’s Got Talent.

“Sign it!” Amanda ordered Simon. “Twenty years, I’ve asked for!”

He then confirmed: “I’m not kidding, she turned up with contracts!”

The judging panel has not changed since 2012 and Simon puts their success down to how well they “get on”.

He continued: “We’ve all got different opinions, everyone in their way, has got their own kind of expertise.

“David is sometimes a comedian. Alesha knows an awful lot about singing and dance, I know quite a bit about music, and Amanda…juggles.

“You know you’ve got a good group around you when you can argue without feeling bad about arguing.

“So when we disagree, which we do a lot, it’s not uncomfortable. That’s when you know it’s a fun place to work.”

Britain’s Got Talent returns Saturday at 8pm on ITV.