'Tudors' recruits Joely Richardson

Will play Henry VIII's sixth wife in five episodes

Joely Richardson has joined the cast of Showtime's drama "The Tudors."

In a five-episode arc on the show's fourth and final season, Richardson will portray Catherine Parr, Henry VIII's (Jonathan Rhys Meyers) sixth and last wife.

The fourth season of "Tudors," which is currently filming in Dublin, Ireland, will premiere on Showtime in 2010.

Richardson is best known for her starring role on FX's "Nip/Tuck."