The pair head south for another K-Fed birthday bash. Plus: Tom & Katie, Paula & her new man and more

THE ROARING 20s

Keira Knightley rings in 21 in a timely fashion with a flapper-style look – but ends her birthday night Saturday in London at the Paper club looking just swine, as she and her guests (including boyfriend Rupert Friend) donned pig masks while exiting the bash.