The pop superstar, who turned 28 on Mar 28, performed at the famed Roseland Ballroom in New York City, celebrated the end of her very special day with her boyfriend and hinted that his presence was unexpected, reported E! Online.
"Another amazing birthday moment. I love surprises!" she captioned a black and white snapshot of the lovebirds.
While the singing sensation did not share a photograph of any presents from Kinney, Gaga posted a glimpse of a very special gift from Donatella Versace.