Netflix’s Full House reboot won’t be at total capacity after producers announced Friday that Mary-Kate and Ashley Olsen, who jointly portrayed youngest daughter Michelle Tanner on the long-running sitcom, will not participate in the Fuller House series. Nearly every major original cast member has signed on for the show. However the Olsens’ absence is a void that left John Stamos “#heartbroken,” as he tweeted after news of the twins’ decision was announced. The series reboot casts Candace Cameron-Bure, who played Full House’s eldest sister D.J. Tanner, as a widower with two children of her own.