Kristin Cavallari Is Engaged!

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Better than a chocolate bunny and jelly beans!

Hills star Kristin Cavallari and beau of just eight months Jay Cutler got engaged over the Easter weekend, a source tells Us Weekly.

"She is so excited and completely blind-sided," says the insider, who adds that the Chicago Bears quarterback, 27, popped the question while the duo was on vacation in Cabo San Lucas, Mexico.

"They've been celebrating all weekend; Kristin told her girlfriends on Monday."

The reality starlet, 24, and football hunk met in August 2010 through an unlikely matchmaker: Giuliana Rancic!

"You know who I set up? Kristin Cavallari and Jay Cutler," the Giuliana & Bill star and E! News host, 36, told Us at the Women's Day Red Dress Awards in February. "I knew them both for awhile and introduced them and they went on a date. Now they're dating."