Fun in the Sun- OUCH!!

Montana went swimming with some friends yesterday. Although we put sunscreen on her before she left- they swam for about 5 hours!!! The poor thing came home totally exhausted and totally sunburned. She is having a hard time getting comfortable in clothes and trying to sleep, and is just generally in pain. We are doing the aloe vera gel and cool rags. A friend suggested applying vinegar?? Has anyone ever done that? These pics don't really do it justice- but you get the idea.