Troian Bellisaro
The Pretty Little Liars star challenged co-star Lucy Hale, plus Tommy Bertelsen and Zachary Quinto.
Robert Buckley
The One Tree Hill hottie looks good in a wet tank top!
Jamie Dornan & Eddie Redmayne
The Fifty Shades of Grey star joined The Theory of Everything actor in the icy challenge.
Terrence Jenkins, Catt Sadler & E! News Team
"First of all Jason Kennedy, I hate you," Jenkins joked before he, Sadler, and more of the E! news team were doused with ice water.
Vin Diesel
The Guardians of the Galaxy star nominated Angelina Jolie, Putin and more bigwigs to participate in the challenge during his video.
Zac Efron
"#ZacEfron takes on the #IceBucketChallenge with @ashleytisdale, donates to the ALSA.org and nominates #MatthewMcConaughey, #RobPattinson and #ErictheActor! #StrikeOutALS."
Lady Gaga
The pop princess captioned her video, "#SharePainShowCompassion," before nominating Adele among others.
Jennifer Lopez
The "I Luh Ya Papi" singer accepted and nominated collaborators Iggy Azalea and Pitbull, plus her BFF Leah Remini.
Iggy Azalea
The Aussie rapper accepted J.Lo's challenge in a neon orange bikini.
Jamie Lynn Spears
After getting doused with ice water, the blonde cutie extended the challenge to her big sis'.
Gisele Bundchen
The supermodel's reason for doing the challenge goes deeper, with her caption reading, "My Uncle Milton and my dear friend Charlene's mom lost their fight to ALS..."
Britney Spears
"I accept the #ALSIceBucketChallenge @JamieLynnSpears...," the "Circus" singer wrote when posting her video.
Justin Bieber
The Biebs used a kitchen item often used to make mac n' cheese during his challenge.
Selena Gomez
The pop star shared a video of herself undergoing the freezing task on Aug. 16.
James Franco
The handsome hunk did the "#ICEBUCKETCHALLENGE!!!! semi-nude.
David Beckham
The soccer star wrote, "Thanks for the ALS Ice bucket challenge nomination Ryan Seacrest," when he shared his acceptance of the challenge on Facebook.
Amy Schumer
The funny woman took a different approach to the challenge.
Allison Williams
The Girls star stepped up to her costar Lena Dunham's challenge and asked her fans to donate to ALS.
Rita Ora
"I had to take it to the streets of NYC, said the British popstar when she shared her video.
Jessica Alba, Gavin Rossdale & Nicole Richie
The brunette beauty took to her Instagram page to share the three getting splashed with ice water.
Kaley Cuoco
The Big Bang Theory actress took to Instagram to post her video and nominated "@joshgad & @nicknamaste."
Niall Horan
The One Direction singer inadvertently turned his challenge into a wet t-shirt contest.
Cristiano Ronaldo
Stripping down to his skivvies, the soccer stud was "happy" to participate in the challenge.
James Van Der Beek
With guns (and a bucket) of steel, the blonde hunk poured ice water over his head for ALS.