With all the attention Carla Bruni is receiving these days for possibly becoming the First Lady of France, the likely future Queen of England has gone relatively unnoticed.

But here's a shot of Kate Middleton and her younger sister Pippa.

The pair partie dat the Kitts Club in London last night to celebrate Kate's 26th birthday. Where, we can't help but wonder, is Prince William?

Kate Middleton celebrates her birthday... without Prince William. Is this on-again-off-again couple off again?