Kristin Cavallari, Jay Cutler welcome son Camden Jack Published Aug 8 2012, 17:02 BST | By Catriona Wightman Recommend 0 Tweet 3 0© WENN / Apega Kristin Cavallari and Jay Cutler have welcomed a baby boy.The former Hills star, who revealed that she was pregnant in January, announced that she had given birth on her Twitter page today."We are thrilled to welcome Camden Jack Cutler into the world," she wrote."He was born this morning weighing 7lbs 9oz. Everyone is doing great!"Cutler's Chicago Bears teammate Earl Bennett let slip that the couple were expecting a boy back in May.Meanwhile, Cavallari's former Hills co-star Heidi Montag has claimed that her friend will be "the best mother ever".Cavallari and Cutler got engaged for the second time last November.MoreKristin CavallariJay CutlerShowbizNextBruce Jenner: 'I watch Kendall, Kylie like a hawk'Previous'Made in Chelsea' Spencer 'not sure about Caggie, Harry Styles sex'