We've all seen Tricia Helfer nude pics in Playboy.

But that doesn't mean the gorgeous Battlestar Galactica actress wants to be flaunting her goodies around all the time.

In the photo below, Helfer shares a laugh with reporters and onlookers, a few seconds after being alerted that a certain body part had slid out of her dress.

This sums up the basic difference between Helfer and Lucy Pinder. One hides any exposed boob, the other makes a living off it.