Want a colorful, fun tattoo without the long-term commitment of a real one? We're already down with nail and finger tattoos being a thing, and now, inspired by Lena Dunham, we're going big. The UK ASOS team tried and tested Rosie Wonders' sick old-school stick-on tattoos and they're super boss. Our tip from the inside? Slightly layer the mini tatts over each other for an even cooler look. Casual Friday, we're comin' atcha.