A nude sketch of Lady Gaga by crooner Tony Bennett has gone viral (like much of what Lady Gaga is involved in). The Vancouver Sun reports that the 85-year-old Bennet released the portrait after they recorded “The Lady Is a Tramp.” The original charcoal drawing is being auctioned as a benefit for Gaga’s anti-bullying foundation, Born This Way, and Bennett’s Exploring the Arts, dedicated to fostering arts education. The portrait measures 18″ x 24″ and is signed by the artist, using his given name “Benedetto” which is how Tony Bennett signs his original artwork. As of this writing the ebay auction is topping $15,000 with the reserve not met.