What is Red Nose Day?
An event filled with comedy, music, and fundraising will raise money to help 12 charity organizations lift children and young people out of poverty, in the U.S. and throughout the world. Now, on to the photos!
1. Heidi Klum
2. Ashton Irwin, Calum Hood, Michael Clifford, Luke Hemmings
3. Sophia Bush
4. Simon Cowell
5. Lisa Edelstein
6. Chris D'Elia
7. Hugh Grant
8. Zendaya
Red Nose Day airs Thursday, May 21 at 8pm ET on NBC.