Prince Harry and Meghan Markle made a surprise appearance at the One805Live! concert benefiting first responders in Santa Barbara over the weekend. The Duke of Sussex, 41, and Duchess of Sussex, 44, attended the benefit on Sept. 20 at actor Kevin Costner's oceanside estate in California, which raises funds for essential equipment and mental wellness programs for Santa Barbara County's first responders.This year's benefit featured performances by Trisha Yearwood, Good Charlotte, The Fray, Alan Parsons, Thelma Houston and more.