Kristin Cavallari, Jay Cutler
Credit: Todd Williamson/WireImage

Sorry Brody Jenner and Stephen Colletti and Justin Bobby, Kristin Cavallari is off the market! The Hills alum, 24, just got engaged to her boyfriend, Chicago Bears quarterback Jay Cutler, 27, whom she's been dating since last fall. The NFL star surprised Cavallari with a quick trip to Cabo San Lucas, Mexico this weekend, where he popped the question, People reports. (Check out her supercute bikini!) With Kristin Cavallari prepping for her nuptials and Heidi Montag already married to Spencer Pratt, who do you think will be the next star of The Hills to tie the knot—Lo Bosworth, Lauren Conrad, or Audrina Patridge? Tell us in the comments!

BONUS! Click through for photos of Cutler and Cavallari—pre-engagement!