MTV VJ Vanessa Minnillo reportedly kicked into full bitch-mode after a Jessica Simpson dead-ringer tried slipping her math to Nick Lachey.

The couple were hanging out at Club Plumm in NYC on Wednesday night when the incident sent the TRL host into such a huff that began yelling at Nick before storming off. “We have to talk!”

Nick followed behind-like an obedient puppy. N.L snagged a cab for V.M and opened the door to allow her in-she ignored him and hopped in another Big Yellow.