Kristen Stewart was never a girly girl, and she decided to prove her worth as a tom-boy when she was nominated by Anne Hathaway to complete the ALS Ice Bucket Challenge.

Instead of pouring ice water over head, she (and her friends Scott Fahrendorf and Nicholas Hoult – look away J-Law!) stuck her head in dirty bath water for 15 seconds before pouring the remains over all over herself. Scott and Nicholas had another trick up their sleeves as they made sure Kristen was well and truly drenched by pouring a huge bucket of water over her at the very end.

The actress made sure that it was known she wasn’t wasting water by saying at the end of the video: "In good faith you must believe that all of this was done with dirty bath water. Please be considerate of California water conservation.”

She’s got a point! As does our Irish Mammy!