Shaw will appear in the show for six weeks only, with her run ending on July 12. Shaw was one of the five members of Hear'Say, a pop group created from the winners of the ITV reality TV series "Popstars." Their debut single, "Pure and Simple," went straight to number one in the U.K. singles charts when it was released in March 2001. Their debut album, "Popstars," that followed, also reached the number one slot, which gave them the distinction of being the only British band to have a debut single and album both at number one simultaneously. The group disbanded 18 months after forming.

Shaw went on to star in Summer Holiday at London's Hammersmith Apollo and subsequently on a national tour, and played the Narrator in the West End revival of Joseph and the Amazing Technicolor Dreamcoat at the New London Theatre in 2005, opposite her then-partner Darren Day in the title role. She has also appeared in the title role of the pantomime Snow White and starred as Janet in The Rocky Horror Show. She has appeared in the reality TV programs "Have I Been Here Before?" and "Britain's Worst Celebrity Driver" as well as "The Courtroom," "Loose Women," "Celebrity Regression," "Holby City," "City Central," "Elidor" and "The Bill."

For tickets call the box office at 0844 412 4652; for more information visit www.chicagothemusical.co.uk.