"I think there's something incredibly sexy about a woman wearing her boyfriend's T-shirt and underwear"

In this quote, Calvin Klein is revealing his individual opinion on what he discovers attractive in a woman. He believes that there is a certain allure and sexiness in a female using her partner's clothing, particularly a T-shirt and underclothing. This could be translated as a display screen of intimacy and convenience in a relationship, along with a sense of vulnerability and confidence in one's own body. It also suggests a blurring of conventional gender roles, as the lady is wearing generally manly clothing. Overall, this quote highlights the idea of finding charm and sensuality in unforeseen and unconventional ways.