How to Wear Colored Jeans like a Celebrity

The Duchess of Cambridge wore cobalt skinny jeans, a polo shirt and cork wedges at the Olympic torch relay at Buckingham Palace.

Jessica Alba played with pastels in clementine AG jeans, a teal top, and a denim jacket.

New mom January Jones worked a pair of Citizens of Humanity's grass-hued jeans ($194 at piperlime.com), a striped top, and laid-back flop-flops while toting her son Xander around L.A.

Olivia Palermo mixed her bright blue bottoms with a black blazer, printed blouse, and bow-topped ballet flats.

The "Smash" star worked red denim with a simple tee and a sunny yellow bag.

Swift stepped off a plane in Sydney in a striped sweater and pastel denim accessorized with tortoiseshell Ralph Lauren shades, a leather satchel and colorful saddle shoes.

"I've never worn so much color in my life," Alba told InStyle.com of her recent rainbow wardrobe, which includes these mint hued jeans by Current/Elliott. And her influx is all thanks to one person, her stylist, Brad Goreski.

Duchess Catherine's younger sister punched up her plaid Maje shirt and black Zara blazer with pink jeans by SuperDry. She accessorized with a bag by Aruna Seth.

The reality star-turned-fashion designer paired her red Joe's Jeans with a nautical striped top.

Saldana wore her cobalt blue Joe's Jeans with a white tee and gray sweater.