Must be because of all that arab money she's about to get for just showing up somewhere in Dubai, looking fabulous of course.
And yes, I am a fan of the fembot, when done properly. And Posh is the best at it. Plus, she is married to Minnie Mouse voiced David Beckham. Is there anything anyone can do about that? It's sad. You look at the guy and he is so cute and then he opens his mouth to speak and phhhhttttttttt.....instant panty buzz-kill.
Anyway, take a good look at the picture above because she probably wont have another go at smiling until Halley's Comet swings around again.