Hair - it can make or break you, especially in Hollywood. Friends didn't even recognize Taylor Swift after she changed out of her curly look. What do you think of her stick-straight hair and bangs?

Rihanna led the way with red hair this year, while Julianna Hough debuted darker locks at the CMAs.

Ashlee Simpson-Wentz opted for a blonde pixie haircut. Other celebs with similar styles - Emma Watson and Hayden Panettiere.  Sometimes less is more!

Then there's "Jersey Shore" guidette Snooki, who finally got rid of the bump it.

Check out all the hair transformations in the video below!

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