And all good Friends fans know that beyond our six BFFs the true star of the show was Rachel Green's hair. Whether long and sleek, short and bobbed, and who can forget those infamous layers ...

There isn't just one way to do '90s-inspired hair. There were Rachel Greene's layers, Mariah Carey's curls, Winona Ryder's slicked-back bob, and Brandy's braids. Gothic micro bangs, supermodel ...