Jan. 22 (UPI) -- Blackpink member Jennie is teasing her debut solo album, set for release March 7. The South Korean singer posted a trailer for the album, Ruby , on Tuesday. Advertisement In that clip , Jennie stands alone in a dark room. She has long red hair, and wears leg warmers and tights. Viewers hear an owl's hoot before the music starts. A larger version of the K-pop star appears and looks down at her smaller self. The preview announces that Ruby will include collaborations with