Alexandra Burke and Rebecca Ferguson are the latest acts set to play the Olympic shows this summer.
The pair will each perform at BT London Live's series of concerts in Hyde Park, which are part of the many gigs be organised to celebrate London's Olympic Games.
Ferguson will perform a concert on July 31, while Burke will play Hyde Park and Victoria Park on August 2.
Amy Macdonald will play Hyde Park on August 4 and Alyssa Reid will perform in Hyde Park and Victoria Park on August 5.
Other acts already confirmed for the show include Tom Jones, McFly and The Feeling. Meanwhile, Alexandra Burke's new single 'Let It Go' has flopped in the charts after receiving no radio support from key broadcasters.
Neither Radio 1 nor the Global Radio Group - who own Capital FM amongst other influential stations - opted to playlist the new single from the X Factor champion.
The song charted at No. 23 in the midweek charts last Wednesday, but had slipped to No. 28 by Friday. In today's final listings, it is a disappointing No. 33.
It's a far cry from the No. 1 heights achieved by her previous hits 'Hallelujah', 'Bad Boys' and 'Start Without You'.
Her previous lowest-charting effort was 'The Silence', which only managed a peak of No. 16 after being available for a whole year as an album track.