Leona Lewis teams with Mariah Carey and Beyonce Knowles for charity

Leona Lewis has recorded a charity song with Mariah Carey and Beyonce Knowles. Leona Lewis - 2008 NewNowNext Awards - Arrivals - MTV Studios - New York City, NY, USA © Janet Mayer / PR Photos

Leona Lewis - 2008 NewNowNext Awards - Arrivals - MTV Studios - New York City, NY, USA © Janet Mayer / PR PhotosThe British star has teamed up with 14 of the world's top female singers other top female singers - including Rihanna, Fergie and Sheryl Crow - for 'Just Stand Up' for the Stand Up To Cancer Charity, which will be released to download from September 2.The super-group will perform the track on stage for in the Stand Up To Cancer benefit show, which is set to air simultaneously on three US television networks - ABC, NBC and CBS - on September 5.The full list of artists appearing on the track are: Leona Lewis, Mariah Carey, Beyonce Knowles, Mary J. Blige, Sheryl Crow, Miley Cyrus, Rihanna, Fergie, LeAnn Rimes, Ashanti, Natasha Bedingfield, Melissa Etheridge, Carrie Underwood, Ciara and Keyshia Cole.Stand Up To Cancer is an initiative of the Entertainment Industry Foundation which calls on the showbiz world to help fight cancer.Other stars expected to take part in the television special include Jennifer Aniston, Lance Armstrong, Salma Hayek, Meryl Streep, Forest Whitaker, Reese Witherspoon and Christina Applegate - who revealed this week she had beaten breast cancer.