Legendary singer Patti Labelle has blasted female pop stars such as Britney Spears and Jessica Simpson, insisting they don't have the talent to achieve lasting careers in the music industry. The 63-year-old found fame with girl group The Bluebelles when she was still in her teens, but believes her career has spanned decades because she has genuine vocal ability. She says, "I think those girls are not going to be here very long. They have no talent. They are not like the Gladys Knights and the Dionne Warwicks."