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Jennifer Aniston, Beauty, 2015 Academy Awards, Oscars

Jason Merritt/Getty Images

Jennifer Aniston is an unabashed creature of habit.  

She likes her dresses black, her makeup minimal and her hair long and loose. That, plus she has straight up admitted it before.

So it's no surprised that she's not a fan of hair changes even when her best friend and longtime hairstylist Chris McMillan suggests them.

"He would love for me to go... he wants to just cut it all off, kind of like a pixie, which I will never do. And he always likes to give it a good two inches every year, just a healthy cut," the Cake star told Fashionista.com. "He's also suggested going back to dark brown. We play with different things. I do listen to him sometimes."

One hair color that's definitely on her Hell No list? "Platinum blond — unless it was a wig — no."

And while she did try out some different looks during this year's awards season, when it came to the Oscars it was most important that she was "comfortable" and that meant going with her signature style.

"I don't like [to wear] my hair up very much. I'm not an up-do kind of gal. I feel like if you're wearing a gown with glitter, you want to have beachy, natural hair to kind of go against that," explained the Living Proof spokesmodel. 

One thing the former Friends star is totally comfortable with is slightly dirty locks. "I'd say I go every two to three days easily without washing my hair," Aniston shared, adding that she doesn't mind the post-workout effect on her hair either. "A little sweat in the hair is nice. It's like a little product. You just blow it out with your fingers and it's actually just fun."