AKM-GSI; Getty; XPOSUREPHOTOS.COM
Grace Gavilanes
Sep 06, 2014 @ 7:15 am

Happy birthday, Pippa Middleton! Kate Middleton's younger sister rings in her 31st year today. It's been a busy time for Pippa, who signed on to bike across the United States for charity earlier this summer and even gave her first television interview to dish about her life post-royal wedding. She does all of these things and more all while staying on-trend, whether she's casually dressed in cutoff denim shorts and a white polo shirt or styled in a glitzy Matthew Williamson dress.

Want even more proof of Pippa Middleton's genius style? Click here to peek at 195 of Pippa Middleton's most memorable outfits.

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