This is Sia, she is an Australian pop singer who I had no idea existed until now. She is super cute and quirky.
This is such a great video. I love how she does the complete opposite of what pop stars do in a music video. Instead of looking super perfect and beautiful, she makes sure she has the ugliest faces you will ever see. Hahaha...I love it. The song's not too bad either for a style of music I'm not usually into,its pretty catchy.