"Lindsay and I are so excited to welcome our sweet little baby boy into the world. It feels so great to be a dad!" Stone wrote on his Twitter account Monday.
Stone -- who appears regularly on The Biggest Loser, served as a judge on NBC's America's Next Great Restaurant earlier this year, and also competed on The Celebrity Apprentice's third season last year -- and the 34-year-old actress began dating in 2009.
(Photo credit Bravo)
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