New year, new 'do! Refinery 29 has pulled together the top trends for Spring 2010, in a handy guide that suggests a different hair style for each day of the week.

Featuring runway staples like hair bows and ballerina buns, our favorite trend, "Grown Up Pigtails" is below. Seen on the runway at Prada (bleached brows optional) and worn really low, these modern-day pig-tails have a glamorous effect.

And, can we mention that we're absolutely obsessed (obsessed!) with those little pony buns on the cover of Vogue Nippon. They're so perfectly cute, we want to cry. Or pinch ourselves. Or something. It's killing us that we don't own more than one hair elastic, so we can't try the trend right now!

Above, clockwise from top left: Prada's spring 2010 ad campaign; Kiehl's Rice & Wheat Volumizing Shampoo, $18, available at Bloomingdale's; Abbey Lee on the cover of Vogue Nippon; Urban Outfitters Rubberband Ball, $8, available at Urban Outfitters. Photo: Courtesy of Refinery 29