Renee Zellweger at the UK film premiere of 'Bee Movie' held at the Empire Leicester Square. London, England - 06.12.07

The star, who was dressed in a black and white polka-dot for the occasion, blamed the wind and the rain for her public mishap, which revealed much of her flesh to waiting photographers.

She said, "I'm soaking wet. I'm like a sponge. My Carolina Herrera dress weighs about six stone."

However when asked about her relationship with Sir Paul McCartney - with whom she was photographed with earlier this year (07) - she remarked, "I have not seen him since I have been in London," and was quickly ushered away from the press by her publicist.

Source: WENN