Stars In Masks!
The actress and her friends hammed it up for Knightley's 21st birthday party at London's Café Royal.
The pop star cha cha cha-ed out of Hollywood club The Green Door in a sombrero and eye-mask with amiga Alli Sims (not pictured).
The 'P' was for party, not V for Vendetta, when the Bad Boy Records mogul hit a Halloween Party at New York's Cipriani restaurant.
Paltrow hopped around New York with daughter Apple in search of Halloween candy.
The Commodore-in-Chief of small ships and diving gets wet on a visit to the Royal Navy's diving squadron in Portsmouth, England.
Olsen donned a mask to hide her face from photographers at Hollywood stylist Estee Stanley's wedding.
The Fall Out Boy bassist hit the red carpet at the MTV Video Music Awards in a green-as-a-gecko mask.
The Gloved One became the Hooded One during a shopping spree on Melrose in L.A.
Feeling under the weather while Down Under, the songstress wasn't taking any during her 2008 Taking Chances world tour.
And you thought Tony Soprano was a killer. Gandolfini – dressed up as Jason from Friday the 13th – goes trick-or-treating in New York.