The actress joined the growing list of famous faces who have been drenched in freezing water and donated money to the ALS Foundation. But before being soaked in her Heidi Klein two-piece, the 41-year-old revealed she was nominating her estranged husband to take part.
Gwyneth Paltrow has taken part in the Ice Bucket Challenge
"Hi, I'm going to alsa.org to donate money for ALS, but in the meantime I'll do this and nominate Chris Martin, Cameron Diaz and Stella McCartney," she told the camera, in a video posted on her Instagram.
A friend then tipped a bucket full of cold water all over the star, who shrieked and started to run away.
Gwyneth and Chris, 37, famously announced they were "consciously uncoupling" back in March but have remained on very good terms.
Gwyneth Paltrow and Chris Martin have remained close since announcing their split
Since then, Chris has been romantically linked to Oscar-winner Jennifer Lawrence, 24, while Gwyneth is rumoured to be dating Glee producer Brad Falchuk.