Usher is sharing the good news with his fans! The singer took to Instagram to announce the birth of his fourth child.The 42-year-old artist and his longtime girlfriend Jenn Goicoechea welcomed their baby boy in September of this year, and Usher is now sharing his excitement with his friends and followers on social media.Usher posted the sweetest black and white photo of his new son, revealing his name and introducing him to the world.“Hi my name is Sire Castrello Raymond ...