Nick has had two girls already and he's not even divorced yet. He has dropped Kristin Cavallari and onto his next conquest. Soon-to-be-ex wife Jessica Simpson is all worked up about Nick's girls.

Lachey's new conquest is American TV host Vanessa Minnillo. The pair were last seen "getting it on" in New York just last week, the new couple didn't seem to care who saw them. There was lots of tongue, tells an eye-witness at Underbar. No one-night stands here, Nicky and Vanessa were seen again dining together the following evening, too.

Recently, Jessica was most upset after she saw her photo right next to Kristin’s on a cover of a magazine.

“She was furious. She thought it was insulting and embarrassing to be lumped together with Kristin! As far as Jessica is concerned, Kristin’s a nobody -19 year old reality tv star who has just been using Nick for free publicity.” Reported Bosh.

Jessica wanted revenge, she got a hold of Kristin’s cellular number and started making crank calls her.

Even though Jessica's rep denies the story, another source claims everything is true and Jessica has even gotten her best buds to join in the fun. The pranks are usually ringing Kristin up to order pizza or other delivery restaurants. Jessica loves that she is frustrating Kristin just a bit.
Source: The Bosh