The radio and media organization boasts an impressive guest list for the April 27 soiree, including Jessica Alba and hubby Cash Warren, “30 Rock” star Tracy Morgan and his fiancé, Megan Wollover, actress Sophia Bush, “The Kite Runner” author Khaled Hosseini and his wife, Ben Ruttner and James Patterson of the music duo The Knocks, and Jedediah Jenkins from the charity organization Invisible Children.