Jay Cutler and Kristin Cavallari
11/30/2011 at 02:00 PM EST
has something big to celebrate this holiday season.
The former Hills
star, 24, is re
-engaged to her NFL beau Jay Cutler, 28.
"This time it's official," she Tweeted
Wednesday. "Jay and I are engaged again :)."
The reality star and the Chicago Bears quarterback originally got engaged
in April, only to split in July
, leaving Cavallari "absolutely devastated."
But after rooting his ex on
in the live audience during her stint on Dancing with the Stars
in October, a source told PEOPLE
Cutler and Cavallari were "working it out."
"I think we both knew from the moment we met that we wanted to marry each other," Cavallari told PEOPLE
in May, shortly after her man initially popped the question in Mexico. "It's been a great situation."