How old was Mariah O'Brien in…

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Mariah O'Brien was 34 in Jam as 'Rose'.

Movie Released: Sat, Apr 01 2006

Mariah O'Brien was 31 in Lovely & Amazing as 'Kevin's TV Co-Star'.

Movie Released: Fri, Aug 02 2002

Mariah O'Brien was 30 in Ordinary Madness as 'Betty'.

Movie Released: Sat, Dec 22 2001

Mariah O'Brien was 29 in Puzzled as 'Alexandra Norton'.

Movie Released: Mon, Jan 01 2001

Mariah O'Brien was 28 in Diamonds as 'Tiffany'.

Movie Released: Fri, Dec 10 1999

Mariah O'Brien was 28 in Being John Malkovich as 'Girl Creeped Out by Malkovich'.

Movie Released: Fri, Oct 29 1999

Mariah O'Brien was 26 in Some Girl as 'Thrift Store Cashier'.

Movie Released: Sun, Apr 19 1998

Mariah O'Brien was 26 in Together and Alone as 'Buffy'.

Movie Released: Thu, Jan 01 1998

Mariah O'Brien was 26 in Kiss & Tell as 'Emma the Sketch Artist'.

Movie Released: Fri, Oct 17 1997

Mariah O'Brien was 24 in Halloween: The Curse of Michael Myers as 'Beth'.

Movie Released: Fri, Sep 29 1995

Mariah O'Brien was 21 in Gas Food Lodging as 'Ivy'.

Movie Released: Fri, Jul 10 1992

Sorted by Release Date
Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages

Mariah O'Brien was 27+ in Charmed as 'Cynda'.

TV Show Released: First Air Date
Wed, Oct 07 1998

Mariah O'Brien was 25+ in Buffy the Vampire Slayer as 'Nancy'.

TV Show Released: First Air Date
Mon, Mar 10 1997

Mariah O'Brien was 24+ in Nowhere Man as 'Nurse'.

TV Show Released: First Air Date
Mon, Aug 28 1995