It has only taken one night of partying with Lindsay Lohan to turn Vanessa Minnillo into a bad girl.

The cute girl-next-door, who has recently moved in with boyfriend Nick Lachey, is in the middle of an image crisis following the pictures with rehab patient Lindsay.

In the shots, the "Mean Girls" star is shown holding a knife to Vanessa and then herself. However, the photos are becoming the least of Vanessa's troubles.

Reports are emerging of diva behavior, which is sending her career on a quick downward spiral. The former MTV VJ and "Entertainment Tonight" host has recently left both jobs, but sources are now emerging and claiming that she was fired.

A source says that the "ET" contract was not renewed because, "She was extremely high maintenance. Insisted they (CBS) fly her own hair and makeup people and her personal assistant out with her every time she flew...She only flew first class and stayed at the Four Seasons, and then she didn't want to work. Vanessa wants to be a celebrity, not interview them."

However, Vanessa's representative denies that the TV personality is making any demands. The publicist told the New York Post newspaper, "She chose to leave 'ET' because her contract ended. This is the first I've heard about any bad behavior."

With Paris Hilton in jail and Lindsay in rehab, maybe Hollywood has finally found its new tabloid victim.

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