KCavallari051912_05_X17crop.jpgKristin Cavallari is officially a mom!

The reality starlet gave birth to her son, Camden, this morning. Cavallari, 25, Tweeted:

    "We are thrilled to welcome Camden Jack Cutler into the world. He was born this morning weighing 7lbs 9oz. Everyone is doing great!"

Baby Camden's dad is Chicago Bears quarterback Jay Cutler.

The couple, who announced they were expecting back in January, originally called off their engagement in July 2011. However, as of now, their wedding plans are back on.

Congrats to the happy family!