Its a boy!

Bristol Palin gave birth to her much-anticipated baby son on Sunday.
The first grandchild of Alaska Gov. Sarah Palin is Tripp Easton Mitchell Johnston, weighing in at seven pounds, four ounces.Bristol Palin is 18, as is her boyfriend of three years, Levi Johnston, a former high school hockey player. Both have dropped out of high school -- she to complete her diploma through correspondence courses, People reports, and he to become an apprentice electrician, he told the AP this fall. They have said they plan to marry in 2009.Colleen Jones, who is the governor's aunt, confirmed the news of the baby's birth to People. "We think it's wonderful," she said. "The baby is fine and Bristol is doing well. Everyone is excited."