Kara McCullough wins Miss USA 2017 pageant

 Kara McCullough, a 25-year-old chemist working for the U.S. Nuclear Regulatory Commission, was crowned Miss USA on Sunday at the Mandalay Bay Convention Center on the Las Vegas Strip. She will go on to compete on the Miss Universe contest.

McCullough is from the District of Columbia which has now won back-to-back Miss USA titles.

Images-AP