Sister is a compilation album by the band Letters to Cleo. It was released on November 3, 1998. The album's last track is a cover of Fleetwood Mac's "Dreams". Although it was the final Letters To Cleo album to be released through a major label, the material on the album pre-dates all their other work; tracks 1-7 are originally from their demo tape, and tracks 8-10 are rarities previously performed live, and track 11 was on a compilation honoring music of the '70s.