Steven Tyler, lead singer of the rock band Aerosmith, has sued his ex-wife in an attempt to make her return photographs taken of him in the nude. Tyler, whose last name is Tallarico, said Kathleen Tallarico was supposed to give him the photos as part of their divorce agreement in 1987. He said he saw a news item last summer indicating she planned to publish "pornographic" pictures in a memoir. State Supreme Court Justice Walter Tolub granted a temporary restraining order that blocks publication of the photographs until the issue has been settled at trial. Mrs. Tallarico, an actress, intended to use the photos in the book about her life titled "Dream On," said her lawyer, Jay Butterman. Tyler, 50, said in court papers that publication of the photos would embarrass and harm him and she has no right to use pictures of him for commerce without his permission.