It wasn’t your ordinary dinner party for 12 on Friday night — though there was cake and champagne.

To celebrate his 48th birthday, U2 front man Bono held a small dinner party at Sass’ Café in Monaco, reports. On the guest list: Actor Brad Pitt, Monaco’s Prince Albert II and U2 guitarist The Edge.

“It was really quite a surprise,” the café’s maitre de told People magazine. “It wasn’t organized in advance. We only got called on it that afternoon.”

The dinner, arranged by Bono’s wife Ali Hewson, began with red wine at 10 p.m., according to staff, even before The Edge arrived for the evening.

The meal was followed by a champagne toast and strawberry cake lit with candles; a staffer described the party as “très speciale.”

Bono’s birthday was actually on Saturday.