Brad Pitt helped Bono celebrate his 48th birthday in Monaco over the weekend.

The 'Fight Club' star joined the U2 frontman and his wife Ali Hewson for an intimate dinner party at Sass' Café, where they enjoyed an elaborate meal washed down with red wine and champagne on Friday night.

Although Brad's pregnant partner Angelina Jolie didn't join them, Bono's bandmate The Edge was there along with Monaco's Prince Albert.

The cafe's maitre de said: "It was really quite a surprise. It wasn't organized in advance. We only got called on it that afternoon."

The meal, which began at 10pm, was finished off with a strawberry cake lit with candles. A staff member described the party as "tres speciale."

Last week, Angelina - who is rumored to be pregnant with twins - and Brad took their four children, Maddox, Pax, Zahara and Shiloh, to visit Bono's home in Eze, France.

The superstar couple is currently in France to prepare for the birth of their rumored twin daughters.

Brad and Angelina have forged a close bond with Bono and his family as they only live 15 minutes away.

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