Joe Jonas and Sophie Turner tied the knot in a surprise ceremony in Las Vegas, complete with an Elvis Presley impersonator as an officiant. Jonas, 29, had just performed at the Billboard Music Awards, where Turner, 23, was a presenter. They were spotted holding hands as they left the awards show early en route to the Little White Wedding Chapel. Turner sported a white jumpsuit for her wedding day. Afterward, they celebrated by posing on a pink Cadillac.