The 26-year-old Selfie star got all dressed up in a Pink Power Ranger costume for the challenge, after she was nominated by Neil Gaiman and Matt Smith.
“I want to nominate Steven Moffatt, Taissa Farmiga and President Barack Obama,” she said before the Red Ranger and Green Ranger poured ice cold water on her.
Karen tweeted after the vid, “ALSO! Thank you @JohnTheCho and Wee Keith for being SO eager and helpful when it came to dispensing ice on me.”
Here is my ALS ice bucket challenge! X https://t.co/W9AgFidGpg
— Karen Gillan (@KarenGillan2) August 28, 2014