If you were a fan of hip hop in the late 90s and early to mid-noughties, then Rocawear will need no introduction. Items from the fashion label, co-founded by rapper Jay-Z, were as common a sight in music videos as groups of scantily-clad ladies popping bottles of Cristal in a hot tub. For the unnaccustomed though, Rocawear is quite simply the most profitable brand in hip hop history.