The Gossip World went gaga last month after news of a romance between Jessica Simpson and Smashing Pumpkins founder Billy Corgan hit the Snitch Circuit. Despite the initial buzz, it now appears that the odd couple’s headline-snatching union may have already hit the skids.

Jess was crushed after Billy blew her off over the holidays — instead opting to stay with family in Chicago for Christmas — and the blonde bombshell is certain her weight is to blame for the musician’s sudden lost of interest.

A NW spy claims: “She’s heard on the grapevine that Billy prefers skinny girls and now she’s convinced he’s losing interest in her because she’s too heavy. She’s frantically trying to lose weight, but it’s tough for her. She really loves her dinners out, not to mention the alcohol and late-night snacks she uses to lift her spirits.”

It’s not always down to your weight, Jess. It could be the fact that the two of you have nothing in common….Just a thought.