Does anyone else smell a big, bad feud brewing? Because if Heidi Klum wasn't mad before, she will be now!

First Jennifer Lopez completed a triathalon in Malibu, just two days after a "foot injury" prevented her from judging the Project Runway season finale.

Then she flew back to New York to attend husband Skeletar Marc Anthony's 40th birthday party later that night. She certainly isn't acting like someone who needs to baby a tender injury. In fact she seemed surprisingly fine considering the strenuous day she'd had.

Rumor has it that Jennifer was mad about not getting a movie role from Harry Weinstein, so she canceled Project Runway, which his company produces. Then Heidi got mad because Jennifer pulled out of the finale at the last minute. Now Jennifer is flaunting how fake her foot injury was, perhaps to make her point, or maybe because she doesn't give a hoot about Heidi Klum's opinion.

Either way, you know what this means: Girl Fight!