It's a known fact that sex sells. But does it build lasting brands? If you ask Calvin Klein, he would say yes. Over a 2.5* billion dollar business built on provocative and sexual images isn't bad.

For years, cars, beer, perfume and recently, deodorants have been sold to males through images of scantily- clad, perfectly sculptured woman. Tapping into the basic instincts of man - sex is a universal interest. Watch a beautiful woman walk down a street and you will notice others following her every step. Sexy images drive eye balls (especially men's who think about sex every 7 seconds!)**.

Clothing retailer Abercrombie & Fitch markets its sexual brand image to college-age adults but ends-up attracting many younger teens (including my 12 and 16-year-old kids). Not only do they show beautiful youth in their advertising, but they hire the best-looking, young people to model their clothes in the stores. They made sure the brand lives not only in the advertising but in the stores. I wish beer stores respected the brand the same way.

Sex comes with many risks (not including rashes and bumps in areas that we don't want to talk about). Klein doesn't apologize for pushing the envelope in what is deemed decent and what isn't. "Sometimes people look at the advertising and resent it or feel threatened by what they see - but in the end, if the sales are good, the images must be OK, " Klein said. The fact is CK's men's underwear owns the underwear market ever since Mark Wahlberg wore nothing but.

Both Calvin Klein and Abercrombie & Fitch continue to walk the fine line between sexy and soft core porn. Consumer groups have launched boycott campaigns against both companies over the years and have successfully had campaigns removed from public viewing. Just recently, the Virginia Beach police seized photos from an Abercrombie store that were deemed indecent.

The fact is beautiful airbrushed, naked people can help sell products and build a sexually compelling brand. Dove had recently taken a different approach by showcasing their products on naked, everyday, wholesome women, so maybe we're not as superficial after all. They did get bad press when it was leaked that they digitally enhanced some of the women's images to make them better looking. OK maybe we are superficial.

Sexy is an easy way to accomplish edginess and draw attention, but does it fulfill your brand promise and is it sustainable? Just make sure you use this power wisely and don't flaunt it unnecessarily or it could do more damage than good to your brand. Remember; over-promising can only lead to disappointment and negative feelings which aren't brand builder.

Your audience will always have the final say and they'll tell you at the till. So provoke, shock and engage, because as long as your audience has given you permission, they'll eat it up like a Coolwhip® bikini.

*1996 was the only sales figure I could find as the company was private until sold to Phillips Van Heusen Corp. in 2002.

**Kinsey Institute's disputes this claim; they state that 54% of men think about sex every day or several times a day and 43% a few times per month or a few times per week.