There is only one word to describe Lady Gaga's latest outing and that is fierce. The singer, who recently vacationed in Mexico, made a stunning Appearance at her friend Tony Bennett's 90th Birthday party in NYC on Wednesday. Donning a sleek strapless black dress, Gaga flaunted her numerous tattoos as she posed for the cameras on the red carpet. Inside, the fun continued as she performed a special number for the music legend alongside Stevie Wonder. **t only did she share a few sweet moments with Tony during the party, but she also joined him for his lighting of the Empire State Building earlier that day.