Throughout her career, Jennifer Aniston has been admired for her beauty and recognized as one of America's sexiest women, and the engaged actress recently shared some of her beauty tips for looking so great.

The 43-year-old is known for her simplistically chic style, and her tips for women who want to look their best are characteristically simple. The most important, she said, is to always be comfortable.

"Don't wear jeans that are so tight they make your tummy hurt. Don't wear heels that are so high you feel like you're going to fall over," Aniston said. "Sexy is about being at ease with your body."

The former "Friends" star added that she's done her fair share of making herself uncomfortable for the sake of fashion, but she said that never makes for a truly enjoyable evening.

"There have been a few times when I've had to say to my girlfriends, 'Could you please come and undo me so I can pee?'" she said. "I mean, literally, it's like you have to have an engineering degree just to get into a flipping dress."

Aniston spoke about the importance of great wardrobe pieces that can be worn over and over again. For her, those include a bag from Tom Ford and wedges from Stuart Weitzman, which the actress said she has "worn into the ground."

The star recently made an official foray into the beauty industry as she became a co-owner and spokesperson for Living Proof, a Massachusetts-based hair care product line. Living Proof, which was founded partly by Massachusetts Institute of Technology professor Dr. Robert Langer, uses scientific researchers from MIT to tackle and solve tough problems regarding hair and beauty.

Over the years, my hair has been subjected to everything ... blow dryers, flat irons, curling irons, color, extensions, you name it. My hair has taken a serious beating," Aniston said. "After using these products, I felt like I finally discovered a solution that works every day. I could not be more excited to share Living Proof with the world."

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Jennifer Aniston, Style