Description:"Happily Ever After" sneak peek: In "Mother's Day," Rosie O'Donnell guest stars as Fran's old friend, Katie. When Fran forgets to make Mother’s Day brunch reservations, Katie suggests she make it up to her mother by spending a day having fun with her. Fran quickly realizes that her mother’s idea of “fun” is very different from her own when they end up going wedding dress shopping with Katie.(1:45)