It’s obvious that these pictures are pretty old and it quite obvious that Lindsay Lohan was using alcohol and drugs from an early age. But who is the other nut in the pictures? Well the mystery got solved.

The mystery brunette posing sexily with a knife at Lindsay Lohan’s throat in photos that ran in yesterday’s New York Post is Vanessa Minnillo, who might have a hard time getting a new job because of the risqué party pictures.

Minnillo, 26, was host of MTV’s “TRL” and New York correspondent for “Entertainment Tonight,” both Viacom shows, until her contract expired in April. The former date of Derek Jeter and current girlfriend of Nick Lachey did not renew with either show.

Last week, she co-hosted the Miss Universe pageant in Mexico City with Mario López without incident. But the beauty is gaining a bad rep in the TV industry for her diva-like behavior at work and hard partying outside the studio.

While friends of Minnillo insist it was she who decided not to renew the contract with “ET,” insiders say her bosses at CBS Paramount soured on her when she covered the Grammys in February. Minnillo was not assigned to the Academy Awards in March.

When producers flew her to Los Angeles to cover the Grammys, “she was extremely high maintenance,” said one source. “She insisted they fly her own hair and makeup people and her personal assistant out with her every time she flew to L.A. She only flew first class and stayed at the Four Seasons, and then she didn’t want to work.