While recording their collaboration of 'Lady Is A Tramp' - Lady Gaga got naked in front of Tony Bennett!

What really happened was that Lady Gaga scheduled her Vanity Fair photo shoot with Annie Leibovitz. At Annie’s request, Lady Gaga began to strip down to her birthday suit, all the while Tony Bennett stared in amazement.

With a schedule like Lady Gaga’s you have to multitask and then some.

Thank God Mr. Bennett didn’t go into cardiac arrest!

Check out the video of the 2 singing their version of 'Lady Is A Tramp' which you can find on Tony Bennett’s newest album Duets II.

CLICK ON VIDEO HERE: