Lady Gaga Performs at Sting's Birthday Celebration

Lady Gaga makes her way into Sting‘s birthday gala in New York City on Saturday (October 1).

The 25-year-old entertainer performed at the event and showed off a book reading “My Monster Family” on the way inside.

“Performed last night with my sweetie pie STING for his birthday! Sang one of my favorite songs of his ‘KING OF PAIN,’” Gaga wrote on her Twitter account. “What a beautiful evening with his family. Wish all monsters could have been there.”

10+ pictures inside of Lady Gaga arriving at Sting‘s birthday party…