November 02, 2009 05:30 PM

Jordan Strauss/WireImage

With her well-documented fashion faux pas and wild makeup, Kelly Osbourne may seem like the last person to pen a style book. Think again, the 25-year-old Dancing with the Stars performer and daughter of infamous rocker Ozzy, has lived through her fashion mistakes and has now polished up her look to be a red carpet star. From wearing the right bra to avoiding too-small clothes, Osbourne reveals her top style tips in her new book, Fierce. Her style rules include the importance of investing in good foundation garments like Spanx. Kelly writes: “The right underwear can make an outfit. It can smooth your shape or hold you in all the right places.” And a great pair of go-to jeans is a must-have. “Find that one pair that you always feel good in. You can make jeans look fancy or you can make them look casual. For me, the cheaper the jeans the better the fit. I get my jeans from Topshop, and they only cost $80.” But there are things worth investing in — like luxe shoes! “Always have a great pair of shoes in your wardrobe. Invest in an expensive pair. A good pair of heels. You wear a pair of Chanel shoes — no one would ever think that the rest of your outfit isn’t Chanel.” A girl after our own hearts. See more at The Daily Telegraph, and buy her book at –Kristin Larson

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