Nick Knight's ground-breaking 2012 fashion film 'Studs', pushes gender boundaries. As defined by one of the subjects of the film, a 'stud' is 'a masculine, butch tomboy who is a lesbian.' Simon Foxton and Bea Sweet recruit a range of subjects who refuse to comply with traditional notions of the sexes. The portraits - each a study of unconventional beauty - are captured in nine unique photo studies