Lady Gaga is causing quite a bit of ‘Mayhem.’ Due to overwhelming demand, the 14-time Grammy winner has added a number of shows to her forthcoming ‘Mayhem Ball World Tour.’ That includes three (!) additional gigs at New York City’s Madison Square Garden.

The two lead singles, “Disease” and “Abracadabra,” from her latest album, “Mayhem,” both performed well on charts worldwide, while “Die with a Smile,” a collaboration with Bruno Mars, won a Grammy Award for Best Pop Duo/Group Performance.

Lady Gaga turns 39 on Friday, and let's be honest - she's never been more Gaga. Already this year, she's won another Grammy, released her seventh studio album, and was both the host and musical guest on Saturday Night Live.