Thanks to one of Jamie Lynn's musician friends who challenged her, we got to see both Spears sisters get soaked because Jamie Lynn naturally challenged her big sis.
In Jamie Lynn's video, she was in a parking lot somewhere in Louisiana, wearing a 'Rock 'n' Roll' jersey where the L's were shaped like her home state. She promised that she'd be making a donation in addition to doing the challenge and she proved it with a receipt from the ALS Association, which she posted later.
In Britney's video, she was standing in her pool all the way across the country in Southern California. It actually looks like someone might have just taken the bucket of water from her pool and dumped that on her head, but since California is in the middle of a drought, we'll let it slide!