You just might be surprised. You can if your motivation and purpose is not sexual. It may look like an objection over 'modesty' when it is really a deep, emotional fear about comparing oneself to others. Let's face it. We all know what we look like nude.
All men know what nude women look like and all women know what nude men look like.
Boys and girls are smaller version of adults. To view the opposite sex nude does not automatically imply that lust will soon follow. Its the 'hidden' part that tempts us. And we all know what is underneath anyway. It doesn't take any imagination to fill in the hidden parts on a body that a wet bathing suit is plastered on to.