Almost exactly a year after last appearing on Letterman, wearing that amazing red Victoria Beckham dress here, Serena Williams was back last night, this time in skin tight black leather. And she hasn't lost any of the punch in the last year. Still looking fabulous. Still amazing. I do prefer her in bold colour, I will say that.

I assume this annual TV appearance has much to do with the US Open kicking off soon. I always know when the US Open is being played because it always clashes with New York Fashion Week and makes Anna Wintour's life very difficult as she whizzes between tennis and fashion. And so we have come full circle today. Fabulous shoes though. Don't you think?