All I know about the sisters comes from their MySpace:
The Millen Sisters, singers, songwriters, actors, models, entrepreneurs & activists are natives of New Jersey, now reside in Los Angeles, began singing as toddlers in the church. These soul sisters are a reflection of The Three Degrees, The Supreme's, The Emotions, The Staple Singers, The Sweet Inspiratins, The Jones Girls, Sam & Dave & The Pointer Sisters. They are inspired by Motown, Philly Soul & The Memphis Sound as well as Southern gospel such as The Meditation Singers, Mahaila Jackson & The Canton Spirituals.
Please pay them a visit!