Katherine Heigl says she isn’t ‘difficult’

Katherine Heigl doesn’t see herself as a  »difficult » actress.

The ‘State of Affairs’ star, who was previously accused of causing  »desperately difficult situations » on the set of her 2010 movie ‘Life As We Know It,’ insists she and her mother Nancy Heigl, who is also her manager, conduct themselves  »professionally and respectfully » in Hollywood.

Asked about her bad reputation, the 35-year-old actress said:  »I can’t really speak to that. I can only say that I certainly don’t see myself as being difficult. I would never intend to be difficult. I don’t think my mother sees herself as being difficult. We always … I think it’s important to everybody to conduct themselves professionally and respectfully and kindly. »

She added:  »If I’ve ever disappointed somebody, it was never intentional. »

A well-placed insider claimed last year that Katherine and her mother were hard to work with, saying:  »I have never experienced anything like Nancy Heigl. It’s about the mouth. ‘F**k you. You are a f**king liar.’ Whatever you’d say, you were an idiot. »

Another source from Katherine’s 2008 movie ’27 Dresses’ backed up the accusations, adding:  »There were movie-star demands — big rooms, the mother there, all the stuff . . . It was just a sense of entitlement. The biggest stars don’t do that kind of thing. »

The former ‘Grey’s Anatomy’ actress hopes fans will  »be excited about » her return to television.

According to Entertainment Weekly, the blonde beauty told reporters while promoting her new NBC series in Beverly Hills:  »I think that this opportunity is — and I think a lot of people want to know why this show, why come back to television — it’s because it’s an extraordinary role, it’s an extraordinary opportunity, and an extraordinary story, and it’s an opportunity for me to flex some different muscles and show a different side of myself as an actor and a performer and a storyteller that I hope my audience will be excited about and love. »