The Parent Trap

Mills plays a dual role in this heartwarming comedy as twin sisters Susan and Sharon, who were separated at birth by their divorcing parents Mitch (Keith) and Maggie (O'Hara), discover each other during a stay a summer camp. They decide to switch lives and when they realize that dear old dad is about to get married to just the wrong woman (Barnes), the twins conspire to bring their divorced parents back together. Well-known Disney fluff. Followed by several made-for-TV sequels featuring the now grown-up twins (Mills reprised her role).