Because at 50, she is the face of iconic Scottish label Pringle whose successful relaunch has as much to do with Swinton's endorsement as it does their clothes.
Because she openly lives, well.. openly - juggling a committed, long term relationship with additional paramours should the mood strike her (which is exactly how she met her current boyfriend whilst still married), and nary a modicum of shame about her non-traditional lifestyle is evident anywhere.
Because she makes makes androgyny sexy and gender irrelevant whether it's her Flock of Seagulls inspired tresses, or the roles she chooses (she has played Mozart on stage, an Elizabethan nobleman in Orlando and an androgynous angel in Constantine).
Because she made this startlingly honest declaration much to the delight of mothers everywhere, "I think I enjoy my work now even more simply because it's even easier than it was. It sounds sacrilegious to say that anything's a delight when you're away from your children, but the truth is that it is refreshing to only have yourself to dress in the morning, and to lie diagonally across the bed. Making films, going round the world on tour - all these crazy things that were so difficult before are so much easier than breastfeeding twins for 14 months that frankly it is a delight."
