Rod Stewart's ex-wife, model Rachel Hunter has hit out at celebrities such as Beyonce Knowles for ruining the hopes of young girls who want to become professional models. The 37-year-old claims the 1980s era of high-profile supermodels gracing runways and magazine covers around the world are over. The New Zealand-native fears for the careers of young models who want to be the next Cindy Crawford or Naomi Campbell, because their efforts are being overshadowed by film and music stars, including Knowles. She tells Australian newspaper The Daily Telegraph, "For years now we have seen people on the covers of magazines that aren't models, they are actresses and it's disappointing. "Sports Illustrated this year had Beyonce Knowles on the cover. What's left for young girls to aspire to if they want to be models? Not much!"