Parenthood is now a reality for reality TV stars Heidi Montag and Spencer Pratt: "Speidi" welcomed their first child, baby boy Gunnar Stone, to the world on Sunday, Entertainment Weekly reports. "Heidi and Spencer are proud parents of a healthy baby boy as of this afternoon," a rep tells E! News. The couple, who used to star in MTV's The Hills, have been married since 2008. They haven't released details of the birth, but in a tweet, Pratt, who now deals in crystals, thanked Hollywood crystal store Crystalarium for "dropping off $27,000 in crystals at the birth." (More celebrity baby stories.)