By Jon Boon - Breaking Celebrity News Reporter

has claimed she is enjoying the single life, but she recently got blanked when she tried to chat-up Hollywood hunk Bradley Cooper in a Los Angeles restaurant, Breaking Celebrity News is exclusively reporting.

The star pair found themselves in trendy hotspot -- Italian eaterie Farfalla in Los Feliz -- at the same time when an eyewitness spied Dita, 40, licking her lips in the general direction of The Hangover star.

However, the burlesque dancer’s attempts at inviting Bradley, 37, over to her table floundered after she tried to send a drink his way. He refused her offer and left the restaurant without even saying goodbye! ( In September, Cooper revealed he’s been sober for 8 years.)

“Bradley completely snubbed Dita when she made a beeline for him,” an onlooker told Breaking Celebrity News.

“She was desperate to get his attention, so she asked the waitress to go over to his table and ask him what he wanted to drink.

“Bradley told the waitress he’s on a health kick at the moment and said he was fine.

“After that, Dita was looking over at him, fluttering her eyelids and wanted him to join her and her friend.

“But Bradley just wasn