DD absolutely freezes at her swim lessons (indoor pool). She is extremely skinny with no body fat. Her lips, fingers, and toes turn blue. She wants to swim better and I want her to learn to swim better, so we have tried a few shortie wetsuits but nothing is working so far. They are too baggy on her to do any good. Any suggestions? I would really like her to continue swimming but she is cold and usually wants to end the lesson early.