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It's that time of year again, when everyone abandons their personal style and wears fun, spooky and, in some cases, downright tacky fancy dress costumes for Halloween. The stars were out in force on both sides of the pond to celebrate All Hallows Eve with many almost unrecognisable from their usual groomed to perfection look. Read on to see our pick of the best celebrity Halloween costumes. Be afraid, be very afraid.

Picture: America's First Lady channels Catwoman in a leopard print top, black leggings and furry feline ears for a trick or treating session at the White House.

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