DailyNews reveals that Hollywood sources said about the famous actress Katherine Heigl that is difficult and too rigid to be able to work harmoniously with her. Although each time she is a great appearance on the red carpet and her cinematographic performances are impeccable, the actress who made millions for her appearances in Knocked Up and The Ugly Truth does not share the same pleasant personality with the characters that she interpreted. "She eats you a lot of time and nerves in every collaboration" said a source with whom she collaborated on the film Life as We Know It for The Hollywood Reporter, adding that on the set there are many difficult moments and desperate in some cases, as Katherine is commenting on each occasion the wardrobe and questioning the scenario daily, until the end of filming. But a lot of her colleagues stand by her, including director Greg Berlanti, considering that as a star, her demands are perfectly normal. Another source from a cable television company told The Hollywood Reporter that, initially, Heigl was about to take the lead role in a television series, but plans were changed due to fear that the actress might ruin the project: " from many points of view she would have been perfect for the role but eventually we figured out that it's not worth the effort." Katherine Heigl even managed to alter his relations with certain directors and filmmakers like Judd Apatow saying about working with him in the past that it was difficult to collaborate with him, and in 2008 she missed Emmy nominations saying about the script of "Grey 's Anatomy" - where she was casted until the sixth season - that it's "not professional enough."