Happy Birthday, Sienna Miller!

Sienna Miller celebrates her 26th birthday with a party at Cliftons Pub in North London on Friday night (the day of her actual birthday).

The British actress (using the Blackberry Curve) was accompanied by boyfriend Rhys Ifans, supermodel pal Kate Moss, socialite Davinia Taylor, musician Jamie Hince, actress Keira Knightley and Keira‘s actor boyfriend Rupert Friend.

15+ pictures inside of Sienna and her birthday party guests…

WHAT DO YOU THINK of Sienna’s outrageously loud birthday outfit?