While there is plenty of drama on camera, there was a lot going on behind the scenes as well.

Heigl was nominated for an Emmy Award in 2008 for her performance in Greys Anatomy but she turned down the nomination.

Speaking to The New York Times about why she did this, she said: I did not feel that I was given the material this season to warrant an Emmy nomination and in an effort to maintain the integrity of the academy organization, I withdrew my name from contention.

In addition, I did not want to potentially take away an opportunity from an actress who was given such materials.

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Greys Anatomy: What happened to Dr Izzie Stevens? Why did Katherine Heigl leave? - Express