Kristin Cavallari still keeps ex Jay Cutler close to her heart!

We spotted the starlet outside of Dancing With The Stars rehearsal on Sunday, where she wore a T-shirt supporting Jay's team! He's the quarterback for the Chicago Bears.

The two abruptly called off their engagement in July. But could they be rekindling their romance?

The show premieres Monday night. Jay Tweeted on Monday, "Good luck babe “@KristinCav: Don't forget to vote tonight!! 18008683403 or” Vote for KC on DWTS tonight."

Kristin responded, "Thank u : )"