Jake Gyllenhaal and Reese Witherspoon will join Stand Up To Cancer

Reese Witherspoon out grocery shopping at Whole Foods in Brentwood, CA. August 5, 2010

"REESE WITHERSPOON and her ex-boyfriend JAKE GYLLENHAAL are set to reunite to take part in a star-studded TV telethon to raise money for the Stand Up To Cancer campaign.Jake Gyllenhaal in "Love and Other Drugs" (2010)

The actors, who broke off their relationship last year (09), are among a number of big names who have signed up to join the charity fundraiser, including The Big C star Laura Linney, cancer survivor Christina Applegate and Terrence Howard.Christina Applegate at a press conference for "Going The Distance" (2010)Christina Applegate showing off her baby bump. She made her way to a studio in Los Angeles, CA on August 17, 2010.

The Stand Up To Cancer telethon will see celebrities manning the phones to take donations from the public during an entertainment special, with performances from Stevie Wonder, Queen Latifah, and Martina MCBride.

The show will be broadcast in America on 10 September". Source: www.contactmusic.com