They had a role on The Suite Life of Zack and Cody , where they were the twins Janice ( Camilla ) and Jessica ( Rebecca ) . They also had the principal roles in the third movie in the series of Legally Blonde , Legally Blondes , which appeared on ABC Family and Disney Channel . They are known for their roles as twins Janice ( Becky ) and Jessica Ellis ( Milly ) on The Suite Life of Zack & Cody , and for their roles as Annabelle `` Annie '' and Isabelle `` Izzy '' Woods in Legally Blondes .