How best to head into the new decade? With a clean slate. Led by a resurgent Phoebe Philo at Celine, designers have rediscovered that less is more all over again for Spring, but this isn't the mannish minimalism of the 1990's. Dresses at Calvin Klein Collection and Donna Karan billowed and frilled; there were feminine takes on tailoring at Yves Saint Laurent; and thanks to Michael Kors' cutouts and Hussein Chalayan's thigh-high slits, we also saw lots of skin.

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1. Clean Energy
2. Game Theory
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6. The Big Reveal