Gabrielle Union's publicist is calling for a celeb boycott of the L.A. club Mood after the hotspot backed out of hosting the Night Stalker star's birthday party, allegedly because she is black. According to Union's rep, Mood's owner (who denies the allegations) mistook the actress for white volleyball star Gabrielle Reece when accepting the booking. Similarly, '70s TV pitchkid Mason Reese also got screwed out of a birthday party venue.