He made his name ridiculing unsuspecting celebrities through his Ali G alter ego.

But now it appears that Sacha Baron Cohen is happily befriending Hollywood's A-list as himself.

Pictured on a yacht in Hawaii, the Cambridge-educated comic, 36, appeared to be at ease joking with Titanic star Leonardo DiCaprio, Friends actress Courteney Cox and Spider-Man star Tobey Maguire.

Enlarge 

A-list yacht: Sacha Baron Cohen, front right in black top on surfboard, holidays with famous pals Tobey Maguire, Courteney Cox and Leonardo DiCaprio

Baron Cohen is on holiday in the U.S. state with his fiance, Australian actress Isla Fisher, 32.

The couple have an eight-month-old daughter, Olive.

They relocated from London to Los Angeles following the success of Baron Cohen's film Borat: Cultural Learnings Of America For Make Benefit Glorious Nation Of Kazakhstan, in which he played the outrageous title character.

Enlarge 

Fun in the sun: Sacha and Isla - pictured on the island with daughter Olive earlier this month - have been joined by a host of stars

An onlooker said: 'The scene was unbelievable. Here were all these A-list celebrities hanging out having fun on a yacht.

'They are all staying in the same area and decided to hire a boat. Leonardo was launching himself off the back of the boat while everyone cheered him on.

'Isla showed she has a daring side as she took a paddle boat for a ride and Courteney then followed her in.

'Tobey Maguire spent a lot of time talking to Sacha Baron Cohen who probably entertained him with his Borat and Ali G impressions.'

Verrry niiiice, as Borat might say.