Who's the Top Trendsetter?

Check out style mavens including Jessica, Beyoncé and Nicole and vote on who you think is the biggest trendsetter – then take PEOPLE's ultimate trends poll. By Serena Kappes

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JESSICA SIMPSON: ALL-AMERICAN

"People are always looking to see what she's wearing next," says PEOPLE style director Susan Kaufman of Simpson (in Las Vegas). "She always looks like the perfect little Barbie doll that you want to dress up. She's an all-American girl." And Simpson's style favorites – cowboy boots, UGGs, jeans, handbags galore – are accessible for anyone. "She wears looks that you can find for less and don't necessarily need a huge budget to emulate."