Claire-Marie was born in Newport, South Wales. She began singing at a young age, winning a scholarship to Stagecoach Theatre Arts at age eleven, and gaining her first professional role as 'Ngana' in the National Theatre tour production of 'South Pacific' soon after. An appearance on the BBC Wales talent show 'Just Up Your Street' followed and in 1998, she was awarded the 'National Champion Child for Music' award. This was presented to her by the Duchess of Kent in a televised ceremony on ITV, where Claire-Marie also performed as part of the program. 

In her early teenage years, she gained a weekend scholarship to the prestigious 'Sylvia Young Theatre School'. In 2000, she appeared as 'Princess' in a BBC Wales televised performance of the pantomime 'Aladdin', after previously touring Wales with the same production. Claire-Marie then joined the 'John Oliver Live' band as lead vocalist, performing at high-end events across the UK and internationally, whilst studying for her A Levels.

After school, Claire-Marie succeeded in gaining entry with a DADA scholarship to Mountview Theatre Arts Academy. She attended here for three years, graduating with a BA(Hons) in Performance and was also the only female pupil nominated in her school year for the 'Spotlight Prize' award. Straight upon graduation, Claire-Marie made her West End debut as 'Cosette' in the musical 'Les Misérables'. This was succeeded by the role of 'Gabriella Montez' in Disney's 'High School Musical' which played to audiences of 3000+ at the Hammersmith Apollo. She reprised this part on the national tour of the production, before returning to London afterwards to play 'Princess' in one of Hackney Empire's critically acclaimed pantomimes, 'Aladdin'.

Following this production, Claire-Marie completed a highly successful run of Rodger and Hammerstein's 'The King and I', playing the romantic juvenille lead of soprano 'Tuptim'. This played at the Leicester Curve theatre before embarking on a national tour, both of which received brilliant reviews. 

Claire-Marie has participated in several workshops for new productions. This includes the pre West-End workshops for Flashdance the musical and a new musical written for the Liverpool Empire called 'Lost Boys'. Radio work includes BBC Radio Four's comedy sitcom 'When the Dog Dies', acting opposite Ronnie Corbett and Liza Tarbuck, and the drama 'The Perfect Divorce' playing opposite Caroline Quentin.

She is currently rehearsing for the part of Indian princess 'Anala' in the new musical 'Between Empires'. This is in the process of being workshopped and performs it's first run in Edinburgh Fringe Festival later this year.