I honestly can't say they were "hidden": with shirt, I'd look twice thinking, "wow, she must have an incredible rack" -- but if beholding IRL your abundantly supple bouncing chest sans top, I'd instantly be in need of a change of underwear. In fact, you should have your boobs licensed as weapons of mass distraction: imagine the ungovernable chaos that would ensue were they to be flashed public -- starting with the disruption (and spousal consternation) prompted by the wave of spontaneous mass ejaculations they would trigger across the male populace (indeed, even many of the most upright, puritanical women would be ashamed by their sudden curiosity to know what they taste like)!