This return to long hair is evident when looking at the streets of Paris during Fashion Week . French cool-girls — in perfectly-tailored tops and with Rapunzel-like waves down to their waistlines — are clearly jumping on the grow-out train . Ahead, you'll find a look book of Parisian trendsetters, all of whom will inspire you to forgo your seasonal cut and start looking into clip-in extensions . Because long, cascading hair may just be spring's most underrated fashion accessory.