Lady Gaga performed “Summerboy” at her Mayhem Ball tour opener in Las Vegas Wednesday — its first live performance since 2007.

After making a big splash at Coachella and coming to Brazil back in the spring, Lady Gaga launched her global Mayhem Ball tour at T-Mobile Arena in Las Vegas Wednesday night. The career-spanning set ...

Lady Gaga's Mayhem Ball kicked off in Las Vegas with a glorious mix of theater and powerhouse vocals. We take you inside the first show.

Lady Gaga officially kicked off her long-awaited Mayhem Ball Tour at Las Vegas’ T-Mobile Arena. Here are the show's 5 best ...

Pop may have many stars, but Lady Gaga just showed everyone why she’s royalty. The singer kicked off her highly anticipated Mayhem Ball tour last night in Las Vegas—and based on the flood of videos ...

Lady Gaga is spreading her mayhem throughout the world, and her fanbase of Little Monsters are reveling in these songs.

Lady Gaga revives rare hits, expands her Coachella opera house, and shines with 'Mayhem' at her Las Vegas tour opener of the Mayhem Ball ...

Lady Gaga kicked off her "Mayhem Ball" tour at T-Mobile Arena in Las Vegas on Wednesday, July 16th with a four-act, 27-song set.

L ady Gaga kicked off her Mayhem Ball Tour on July 16 at the T-Mobile Arena in Las Vegas. The “theatrical and electrifying” ...

The ‘Mayhem Ball’ has finally dropped. Four long months after releasing her seventh studio album “Mayhem,” Lady Gaga launched ...

The July 5 "Back to the Beginning" show raised more than $190 million for three charities, surpassing the amount raised by ...