Also sued was Williams, who is Kiely's sister; another sister, Tse Williams, owner of Nine Lives Entertainment of Newark; Big Cat Management of New York; and Sony Music.
The lawsuit seeks an order terminating Naughton's contract with Nine Lives and Sony
and compensation for loss of income from the conduct of the defendants.
Formed in 1999, 3LW
-- for three little women -- has sold more than 1 million copies of their self-titled debut album.
The group's new album, "A Girl Can Mack," is scheduled for release Oct. 22.