UK Reebok billboard Kelly Brook nude Reebok EasyTone sneakers

Kelly Brook poses next to her controversial billboard in London, England. Photo: Mike Marsland/WireImage.com

Buckle up, fellas.

A racy new UK Reebok billboard featuring actress Kelly Brook in the buff has Britian's Institute of Advanced Motorists warning that it is a "deadly distraction" for drivers, the Daily Mail reports.

The curvaceous Brook appears nude in the sexy 40-foot billboard, lying on her stomach and wearing just a pair of Reebok EasyTone sneakers.

"The fact that most men remember the 'Hello boys' Wonderbra advert indicates how distracting roadside adverts can be," IAM official Peter Rodger told the paper, citing the dozens of road accidents linked to the famous Eva Herzigova ad.

"They all add to the clutter pulling your visual attention away from the road and adding to the information you need to process as you drive along."

"It is absolutely vital that drivers keep their full attention on the road to avoid crashes which may lead to injury or death," added a spokesman for road safety charity Brake.

But while Canadian research has reportedly shown that advertising can increase accident rates by up to 50 percent, Reebok told the Daily Mail that drivers were "cautious enough" to keep their eyes on the wheel.

But just to be on the safe side, why don't you just leaving the driving to us, boys?

Meanwhile, a new study has found that male drivers are distracted by skimpy summer outfits.