Following the news that ‘Black Panther’ star Chadwick Boseman died at the age of 43 after a four-year battle with colon cancer, celebs took to social media to pay tribute to the late actor. Brie Larson, Mark Ruffalo, Chris Evans, Gabrielle Union, Oprah Winfrey, Don Cheadle, Chris Hemsworth, Sterling K. Brown, Kerry Washington, Denzel Washington, Zoe Saldana, Reese Witherspoon, Kate Hudson, Mariah Carey, Tiffany Haddish, Zachary Levi, Aisha Tyler, Mandy Moore, Octavia Spencer, Ashton Kutcher, Joey King, Halle Berry, Ryan Reynolds, Chris Pratt and more honored Chadwick.