More than a year after they started dating, Nicole “Snooki” Polizzi and her beau, Jionni LaValle, have split, In Touch can exclusively reveal. “It happened after her birthday party last weekend in Las Vegas,” a friend says of the 23-year-old Jersey Shore vixen. “They’re done!”

And it seems that the reality star’s thin new frame is to blame for the parting. “Snooki broke up with him because she is looking better than ever and wants to date someone famous,” the friend explains.

The split may come as a shock to Snooki’s fans, since she only recently gushed to In Touch about her and Jionni’s bright future together. “I ask him every day, ‘When are we getting married?’” she said in an exclusive interview in October. “We want four kids!”