On the rich and powerful food chain, well-heeled baby daddies apparently beat out bald-pated action stars. According to "Extra," Bruce Willis was unceremoniously booted out of an exclusive Sardinia establishment after he inadvertently snubbed the model-fiancée of co-owner Flavio Briatore, who's best known for fathering Heidi Klum's daughter.

The actor, who was recently snapped frolicking on the island with former Playmate Karen McDougal, was reportedly holding court at the restaurant Cipriani, located inside the ridiculously overpriced Billionaire Club, when the kerfuffle began.

Seems Bruce, who was with producer pal Jerry Weintraub, took a picture with Briatore, 57, but didn't realize his dark-haired arm candy Elisabetta Gregoraci, 26, also wanted to strike a pose with him.

The skin-flashing model supposedly sniveled about the perceived slight to her father figure sugar daddy wealthy beau, who dispatched some bouncers to escort Willis and Weintraub out of the club.

"Stay away from the restaurant Cipriani and the Billionaire Club in Sardinia if you don't want to be humiliated!" the punted pair fumed to "Extra."

Briatore was initially eager to have the actor at the hot spot, according to the New York Post, which says he issued an invitation to moneybags British model Diana Jenkins to have her and her guests join him for the evening.

"Of course, Flavio knew Bruce and Jerry were staying on her yacht ... but Flavio pretended like he didn't," a mole tells the paper. "He told her it was low-key and very exclusive, but when they arrived, Bruce was ambushed by dozens of photographers. It was really awkward."

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