If September 23rd was the day to be gay in Hollywood, then today is the day to be white trash (but then again, what day isn’t?). The very pregnant Ashlee Simpson celebrated her 24th birthday in glorious white trash style. Celebrity pals Nicole Richie, Joel Madden, and Christina Aguilera were on-hand to help the heavily-pregnant star celebrate her big day. “It had a white-trash theme. Ashlee wore Daisy Duke hot-pants and platform flip-flops...