When you see the blown-up projection of her face at the back of the stage, you can see that Sylvie Guillem is 48. Though I doubt somehow that she groans as she gets up from the sofa. If I'm lucky, maybe I'll see her dance once or twice more, but she plans to retire when she is 50.
She is as scintillating and charismatic as ever but I'd swap a whole evening of this kind of thing to see her for 10 minutes back at Covent Garden. Preferably without this bloody awful music.