Kim Kardashian and Kanye West
The two brought their daughter North West to the Washington D.C. march.
Charlie Puth
The singer appears at the March for Our Lives Los Angeles event.
Olivia Wilde
The actress speaks at March For Our Lives Los Angeles on March 24, 2018.
Jaden Smith, Kendall Jenner and Hailey Baldwin
The trio pose at the March For Our Lives 2018 rally in Los Angeles.
Rita Ora
The British singer performs at March For Our Lives Los Angeles on March 24, 2018 in Los Angeles.
Jennifer Hudson
The singer performs at the Washington D.C. march.
Cher
The singer marches in Washington.
Miley Cyrus and Demi Lovato
The singers pose together at the Washington D.C. rally.
Parks and Recreation Cast
Former co-stars Natalie Morales (Lucy), Billy Eichner (Craig Middlebrooks), Adam Scott (Ben Wyatt), Aubrey Plaza and Paul Rudd (Bobby Newport) reunited at the Washington D.C. march.
Amy Schumer
The actress speaks at the Los Angeles march.
Willow Smith
Will Smith and Jada Pinkett Smith's daughter speaks at the Los Angeles march.
Lady Gaga
The singer appears with friends.
Demi Lovato
The singer performs at the Washington D.C. rally.
Paul McCartney
The former Beatles member marches partially to honor late friend and band mate John Lennon.
Ariana Grande
The singer performs at the Washington D.C. rally.
Yara Shahidi
The actress speaks at the Los Angeles march.
Jimmy Fallon and Dennis Rodman
The Tonight Show host and the former NBA star appear together at the Washington D.C. march.
Miley Cyrus and Noah Cyrus
The sisters appear at the Washington D.C. rally.
Miley Cyrus, Tish Cyrus, Brandi Cyrus and Noah Cyrus
"Surrounded by heroines!" Miley wrote on Instagram. "Lucky to be here at this moment in history with the ones I love!"
Amal Clooney and George Clooney
The two attend the main Washington D.C. march.
Charlize Theron
"These mommas demand action. #MarchForOurLives," the Oscar winner wrote on Instagram.
Lin-Manuel Miranda and Ben Platt
The Hamilton creator poses with the star of Broadway's Dear Evan Hansen at the Washington D.C. rally.
Common and Andra Day
The singers perform at the Washington D.C. rally.
Padma Lakshmi
"It's not about the second amendment, it's about children's lives vs money in the NRA's pocket. Enough. Is. Enough. @marchforourlives �� @everytown #notonemore #marchforourlives," the Top Chef host wrote on Instagram.