In an era in which to advertise a product naked models are often used, even when they are far from being relevant, I propose you the counter-example par excellence.
Wonderbra, producer of the famous Push-Up, perhaps it would be among the few to have reason to use naked models in its posters. Let's see how the company is able to communicate funny and perfectly, often without any model.

Some advertisements are immediate, for the others I'll give you a couple of seconds...