Kristin Cavallari and Jay Cutler Welcome Baby Boy

From Hills villainess to beaming mother!

OK! NEWS: EXCLUSIVE PHOTO: KRISTIN CAVALLARI CELEBRATES HER BABY SHOWER WITH HELP FROM LE BEBE COO

Kristin Cavallari and her Chicago Bears quarterback fiancé, Jay Cutler, are proud parents to a son, Camden Jack Cutler. The "thrilled" couple Tweeted the news this morning, revealing Camden weighed 7 lbs. 9 oz.

The Laguna Beach alum announced her pregnancy in January, after an on-again, off-again affair with Jay, which resulted in a broken engagement in July 2011 and a reconciliation this past fall. No word on when the couple will wed.

Meanwhile, Kristin is keeping busy with a few budding business ventures. She's working on a shoe line with Chinese Laundry that will be out this December and jewelry line due in November. But that isn't to say she's shelving her mommy duties.

OK! NEWS: KRISTIN CAVALLARI'S PUPPY LOVE

"We're talking about the possibility of having another kid right away and then getting married so we can have two kids close in age," she told the Glamoholic. "We want four kids, so we're thinking maybe have one more, then get married, then have two more, but we'll see. It all depends on how the first one goes."