Lady Gaga unveiled the artwork to her upcoming album, "ARTPOP," on Monday morning by debuting the image on Clear Channel billboards. The album cover features a nude sculpture of Lady Gaga done by acclaimed artist Jeff Koons. The 27-year-old singer took to Twitter to voice her nerves ahead of the image's release, saying, "I'm nervous and excited to share something that's such a piece of my heart. Something I cherish deeply. A real depiction of my mind through his." Led by the hit single "Applause," "ARTPOP" will hit stores on November 11.