The singer will star in the show with music and lyrics by Irving Berlin, Cole Porter and George Gershwin at the New Wimbledon Theatre
Popstar Pixie Lott will join Strictly Come Dancing professionals Trent Whiddon, Robin Windsor and Kristina Rihanoff in Puttin' On the Ritz at the New Wimbledon Theatre in May.
The show, which features the songs of Irving Berlin, George Gershwin and Cole Porter including the title number, "Cheek to Cheek", "Night and Day" and "I Got Rhythm", will head out on tour, with Lott performing in Wimbledon from 27-30 May 2015.
Pixie Lott is an award-winning singer and songwriter, with singles including "Boys and Girls" and "All About Tonight". She reached the quarter final of 2014's Strictly Come Dancing with Trent Whiddon.
Puttin' On the Ritz is also visiting venues including Theatre Royal Newcastle, from 2-6 June 2015.