Photo: Rich Fury, Rich Fury/Invision/AP Image 1of/8 CaptionClose Image 1 of 8 Alexandra Parker, left, and Sean Parker arrive at Sean Parker and the Parker Foundation's Gala Celebrating a Milestone in Medical Research on Wednesday, April 13, 2016, in Los Angeles. (Photo by Rich Fury/Invision/AP) less Alexandra Parker, left, and Sean Parker arrive at...