Liu Yifei (, , born 25 August 1987), birth name An Feng (??), legal name Liu Ximeizi (????), also known as Crystal Liu, is a Chinese-American actress, model and singer. Liu is widely known as "Fairy Sister" in the entertainment industry for her sweet and delicate image. In 2009, she was named as one of the New Four Dan Actresses in China. In 2017, she was cast as the lead in Disney's live-action adaptation of Mulan.