The Olsen Twi..., oops, I'm sorry — Mary-Kate and Ashley Olsenreceived a star on the Hollywood Walk of Fame Thursday. The 17-year-old self-made billionaires — who will host Saturday Night Live's season finale on May 15 — thanked family, friends, fans and "every cast member we've worked with through the years." I'm sorry, but Candace Cameron at the very least deserved to be mentioned by name.