A comely blonde who hid her light locks for her memorable turn as a Gothic outcast in the teen screen comedy Mean Girls, Caplan had recurring roles on Freaks and Geeks and Tru Calling before earning a leading role on the short-lived 2006 sibling dramedy Related as a party-planning drama queen. She traded that sentimental role for a grittier comic turn as a rebellious beauty on the sitcom The Class.