I've been sunburned before but nothing like this!! I can't even imagine the pain this young girl endured. 16-year-old Maisie Squires from Leeds, England went snorkeling while on vacation in Cuba and although she was only out for an hour AND she applied sunscreen she still managed to get sunburned. This may be the worst sunburn I've ever seen. Although the blisters on her back look disgusting, doctors say blisters are a good sign. Blisters help your skin heal and they should never be popped. Thankfully, Squires is feeling much better now but she did mention in her Facebook post that those blisters you see in the picture "showed up just before her 9 hour flight back home to England." I know summer is coming to an end but this picture will forever remind me to never leave the house without sunblock again!