Kiersten Kelly was born with only one arm. Sometimes it makes life hard for her, but she really uses it to her advantage on this cover of the song 'Cups'She is a beautiful girl with an amazing voice, and she doesn't let negative comments bring her down.   Kelly also has a couple of other video's explaining her personal situation, and thanking us for our support.  In another one of her video's she plays guitar with a prosthetic from Hanger.  Subscribe to her channel for amazing music and a girl with a positive outlook on life.