Kristin Cavallari by night

I think Kristin's adventures really deserve a thread

EXCLUSIVE! Sorry, Kristin Cavallari, Derek Jeter Is Not Interested In You!

he Hills star Kristin Cavallari has her eye on Yankee Derek Jeter … but from what we saw, the feelings are not mutual!

Kristin Cavallari, 23, either doesn’t realize that Derek Jeter, 35, is in a very serious relationship with actress Minka Kelly, 29 … or she doesn’t care! HollywoodLife.com spotted The Hills cutie partying at the Tao Super Bowl party at Wall nightclub inside the W Hotel South Beach on Feb. 5, where she was seriously trying to get close to the Yankee slugger. Kristin, who was definitely enjoying the cocktails and popchips that were being served in the VIP area, was doing everything in her power to get to Derek’s table!

We even overheard one guest say, “Kristin needs to stop trying so hard.” And after a few failed attempts, she finally did!

Kristin gave up trying to get close to the Yankee and joined the other celebs who were celebrating, including Alex Rodriguez, Kevin Connolly, Chace Crawford, Amanda Bynes and Wilmer Valderamma.

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Jets quarterback Mark Sanchez makes a pass at 'The Hills' star Kristin Cavallari

Last weekend may have been about the Saints and the Colts, but Jets heartthrob Mark Sanchez still managed to steal one show in Miami.

Our snowbird spy says the quarterback had lots of ladies fawning over him at a Maxim bash at the Raleigh Hotel on Saturday, but Sanchez had eyes for only one gal: "The Hills" star Kristin Cavallari.

"He was definitely all about Kristin," the source dishes. "They even left together at the end of the night."

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I just wonder, before or after Derek Jeter?