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Look who’s color blocking! Following in the footsteps of celebrities like Freida Pinto, Emily Blunt, and Sarah Jessica Parker, Pippa Middleton worked the vibrant look on her way to a hair appointment. The royal-in-law paired Paper London’s Mondrian-inspired sweater (currently sold out online) with Goldsign’s dark denim “Lure” skinny jeans ($240 at dianiboutique.com), topping off the style with her signature Modalu bag in black leather. See more memorable Pippa outfits in the gallery.

Jean label J Brand collaborated on a denim collection with Shopbop.com—and it’s out today! Featuring two pairs of jeans, two pairs of shorts, and a denim jacket, the limited-edition lineup boasts a variety of washes and a chic leather trim. All the looks are available now on Shopbop.com, ranging in price from $235 to $445. See all five pieces in the gallery now.

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• Shop J Brand’s Ready-to-Wear Collection
• Kate and Pippa Middleton Love J Brand
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Kate and Pippa Middleton are a year and a half apart; but when it comes to fashion choices, they might as well be twins. They gravitate not just to similar clothing (they are sisters, after all) but to identical styles. Check out the pair as they mirror each other’s day looks (bright denim and turtleneck dresses), and preferences in cuts, patterns and colors (they love their sapphire!).

See Kate and Pippa’s fashion double takes!

Banana Republic isn’t the only retailer to roll out a Middleton-inspired “Pippa” dress this spring. Minka Kelly stopped by the L.A. launch party for Brad Goreski’s new book, Born to Be Brad, in a floral Kate Spade design named for the royal-in-law ($478 at katespade.com). While the style isn’t based on one particular Pippa Middleton look, we could easily see her adding it to her closet full of printed, waist-defining, v-neck dresses.

See Pippa’s most memorable outfits!

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• Banana Republic’s “Kate” Dress
• Pippa Middleton Skis for Charity
• Banana Republic’s Spring Mad Men Collection