We're surprised she was willing to mess up her always flawless hair!

Jennifer Aniston accepted fiancé Justin Theroux's nomination for the ALS Ice Bucket Challenge, and while she was a good sport and completed it, it didn't look like she enjoyed it all that much!

"Hi, I'm Jennifer Aniston and I accept this ALS Ice Bucket Challenge from Justin Theroux. I'm going to make a huge ginormous donation and so should you," she declared as she looked straight into the camera. The actress nominated pals Chelsea Handler, Courteney Cox, and Howard Stern to follow in her footsteps. After being drenched with a bucket of freezing water, the Friends star covered her face as she was consoled by her actor sweetheart.

We're about ready to have this movement die down!