Twin tots Mary-Kate and Ashley Olsen became superstars during the 1980s as toddlers co-starring on the hit ABC sitcom Full House, later expanding their empire into records and home video with smash releases including Brother 4 Sale and I Am the Cute One. In 1998, the now-teenaged Olsen siblings launched a new TV series, the short-lived Two of a Kind, as well as a new album, You're Invited to Mary-Kate & Ashley's Ballet Party. Cool Yule followed a year later, and songs from each album appeared on 2000's Mary Kate & Ashley's Greatest Hits. ~ Jason Ankeny, Rovi
