"Jersey Shore" star Ronnie Ortiz-Magro and girlfriend Jen Harley have reportedly welcomed their first child together. Reports say Ronnie skipped out on the London premiere of "Jersey Shore Family Vacation," in order to get back to Harley when she went into labor. The child's birth comes just days ahead of the U.S. premiere of the reunion show, which airs on MTV April 5 at 8 PM.