Lady GaGa Goes Braless in Sheer Dress, Flashes Black Panties at 'Tony Bennett Celebrates 90'

The 'American Horror Story: Hotel' star flashes her nipples in the very revealing outfit as she arrives for the taping of the NBC special at Radio City Music Hall.

Lady GaGa has stepped out in another jaw-dropping outfit. The Mother Monster went braless in a semi-sheer black dress while attending "Tony Bennett Celebrates 90: The Best Is Yet To Come" at Radio City Music Hall, New York City on Thursday night, September 15, leaving very little to the imagination. 

GaGa lifted her skirt, flashing her black underwear. Her nipples and tattooed torso were also visible under the very revealing dress. She arranged her blonde hair in an up do and sported deep scarlet lipstick and strappy black heels. Later that night, she wore black shades as she made her way over to Greenwich Village's Electric Lady Studios.

GaGa was among the musical performers at "Tony Bennett Celebrates 90", which will also feature Stevie Wonder, Michael Buble and Andrea Bocelli among others. The special will air December 20 on NBC, just in time for the holiday season.