iVillage Entertainment

Buh-bye, Kristin Cavallari. Hello, Vanessa Minnillo. According to People.com, Nick Lachey is hooking up with a gorgeous new lady: MTV and Entertainment Tonight employee Vanessa Minnillo. On Monday, the duo were playing tonsil hockey in a curtained-off section at the W Union Square's Underbar. "I saw tongues on skin," said an eyewitness of what People.com is calling an "R-rated bump-and-grind." The following night they had dinner with friends, then went to another bar. So who is Vanessa Minnillo? By day, the 25-year-old is an on-air personality for MTV 's Total Request Live and ET. The former Miss Teen USA (Nick loves pageant girls!) also dated NY Yankees superstar Derek Jeter. Vanessa will appear in the upcoming video for Nick's new single "What's Left of Me," which is said to be about his split with Jessica. According to Us Weekly, Vanessa stands in for Jessica while Nick sings in a house similar to the home he shared with Jess during Newlyweds: Nick & Jessica. Nick watches as all the objects around him disappear -- including Vanessa. "The song is all about changes," Vanessa told Us. "Nick is so strong. He's really putting himself out there as a musician." Apparently strong enough to be her new man...