Nearly a decade after Katherine Heigl was branded "difficult" in the media, the 37-year-old actress has spoken about the Emmy Awards controversy and her reputation.

Back in 2008, the 27 Dresses star got into hot water when she withdrew herself from the 2008 Emmy race since she didn't consider the Grey's Anatomy "material" Shonda Rhimes had given her "to warrant an Emmy nomination".

Talking on The Howard Stern Show on Wednesday, she said: "I didn't feel good about my performance.

"There was a part of me that thought, because I had won the year before, that I needed juicy, dramatic, emotional material and I just didn't have that that season.

"So I went in to Shonda, (the show's creator) and said, 'I'm so sorry. That wasn't cool. I should not have said that'... I shouldn't have said anything publicly but at the time, I didn't think anybody would notice.

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"I didn't know that journalists would see who submitted and who didn't. I just quietly didn't submit and then it became a story and then I felt I was obligated to make my statement and 'shut up, Katie'."

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But the Knocked Up star revealed the pressure of it all took its toll. 

"I was not handling it well. I was feeling completely like the biggest piece of shit on the bottom of your shoe," she went on.

"I was really struggling with it and how to not take it all personally and not to feel that there's something really deeply wrong with me."

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