Star added to Joseph Lineup
Smith will be the narrator when Joseph and the Amazing Technicolor Dreamcoat returns to the London Palladium in June.
Her past work includes Funny Girl, Little Shop of Horrors and Legally Blonde. As well as her TV roles in Gavin and Stacey, Cleaning up and Two Pints of Lager and a Packet of Crisps.
Joseph was originally released as an album back in 1969 and featured the much-loved tracks 'Any Dream Will Do' and 'Close Every Door.' The musical was last in the West End in 2007, after Lee Mead won in role in the BBC's ANy Drean Will Do Show.