Nothing heralds the arrival of summer like a sea of sun-beaten faces flooding the office after a weekend of beer garden-hopping and barbecues. But in the world of celebrity, where sporting a suntan is a basic year-round requisite, the shaving off of one's hair is the true sign that summer has finally begun. 

Like a human barometer, then, Nick Jonas' freshly shorn 'do sets the tone in terms of low-maintenance, seasonally appropriate haircuts and has landed him our coveted hairstyle of the week title, while welcoming the summer style.