Reese Witherspoon, Will Ferrell, and More Converge for NBC'S RED NOSE DAY Charity Event, 5/21

Some of Hollywood's biggest stars, including Julia Roberts, Will Ferrell, Jennifer Aniston, Reese Witherspoon and Jodie Foster, will come together on Thursday, May 21 (8-11 p.m. ET) for NBC's "Red Nose Day" special to have fun, raise money and change the lives of children living in poverty in the U.S. and throughout the world.

In the spirit of "Red Nose Day" giving, many media outlets generously donated media space to help promote the live three-hour event - from print and digital space to airtime for spots to billboards. National radio time was also donated, along with advertising space in theaters and subways, on jumbo-tron displays and more.

Outfront Media, the country's largest out-of home company, led the charge, donating 3-D billboards sporting giant red noses in top markets across the country, including Los Angeles, Chicago, Philadelphia, Dallas, San Francisco, Boston, Atlanta and Miami. They also donated space on buses, in subways, on street furniture and via digital bulletins and posters.

In addition to Outfront, media partners who donated space include Conde Nast, iHeartMedia, Time Inc., Amazon, AMI, AOL, Bon Appétit, Closer Weekly, Deadline/TV Line, Details Magazine, DIRECTV, DISH, Epicurious, GQ Magazine, GumGum, The Hollywood Reporter, In Touch Weekly, Life & Style Weekly, National CineMedia (NCM), The New Yorker, Opera Mediaworks and Pandora, along with Rolling Stone, Rovi, Specific Media, Spotify, Tremor Video, TubeMogul, TV Guide, TV Guide Magazine, Videology and Yume.

In an effort to cast the net as wide as possible, NBC reached out to key partners they work with on a regular basis. The value of media donated was in excess of $10 million, with over 30 partners supporting the fun-raising special that will feature great comedy, videos produced by Funny Or Die, incredible music performances and Hollywood's favorite stars.

More than 65 stars will be appearing in the 'fun-raising' special, including Julianne Moore, Jack Black, Coldplay, Neil Patrick Harris, John Krasinski, Emily Blunt, Michelle Rodriguez, and Gwyneth Paltrow, along with John Legend and "Voice" coaches Adam Levine, Blake Shelton, Christina Aguilera and Pharrell Williams.

The benefit event will help 12 charity organizations lift children and young people out of poverty, in the U.S. and throughout the world. The charity partners are Boys & Girls Clubs of America; charity: water; Children's Health Fund; Feeding America; Gavi, The Vaccine Alliance; the Global Fund; LIFT; National Council of La Raza; National Urban League; Oxfam America; Save the Children and United Way.