Photos: Youth America Grand Prix’s Star Studded Gala

Amy Astley was the honorary chairman and Marcella Guarino Hymowitz as chairman of Thursday night’s Youth America Grand Prix’s “Stars of Today Meet the Stars of Tomorrow’ Gala” at Lincoln Center. Samantha Boardman-Rosen, Colby Mugrabi, Candice Jordan Miller, Ashley Olsen, Mary Kate Olsen, Lesley Thompson Vecsler all served as co-chairs. CBS’s Keltie Knight welcomed guests…