Sara Ullrika Watkins (born June 8, 1981) is an American singer-songwriter and fiddler. Watkins debuted in 1989 as fiddler and founding member of the progressive bluegrass group Nickel Creek along with her brother Sean and mandolinist Chris Thile. In addition to singing and fiddling, Watkins also plays the ukulele and the guitar, and also played percussion while touring with the Decemberists.