The 11-year-old former "Full House" stars are using the megamall as a giant set for their latest video, "You're Invited to Mary-Kate & Ashley's Mall Party." The twins will ride roller coasters, run around the food court and pick out dresses. Since 1993, the Olsen twins have sold more than 6 million copies of their two videos, "The Adventures of Mary-Kate & Ashley" and "You're Invited to Mary-Kate and Ashley's." "Eleven-year-old girls, Mall of America, what could be better?" said mall associate general manager Maureen Bosch, who suggested the twins do a show at the mall.