Barbra Streisand is calling it quits, and this time the legendary Funny Girl isn't joking around. Streisand's four September concert dates will mark the 58-year-old diva's final live appearances. "This is only part of her professional life she has decided to put a stop to," Streisand's manager told USA Today. The Oscar winner — who has had a long history of stage fright — will say good-bye to her fans on Sept. 20 and 21 at Los Angeles's Staples Center and Sept. 27 and 28 at New York's Madison Square Garden.