Katy Perry and Lady Gaga. Friends? Rivals? Maybe the only time these pop divas have been mentioned in the same sentence recently is when Perry went to see Gaga’s Mexico City concert in April.

Lady Gaga made history after attracting an astounding 2.1 million fans at an electrifying free concert on Copacabana Beach in ...

Lady Gaga dazzled 2 million fans at a free concert on Copacabana Beach in Rio, celebrating her first Brazilian performance ...

Gaga made history, she decided to throw a free show. The result? Over 2 million people went to her concert in Coacabana and ...

A record breaking over 2 million people attended Lady Gaga's concert in Brazil Saturday. Could such a concert even be held in ...

Two people were arrested under suspicion of carrying out a terrorist attack during Lady Gaga ‘s record-breaking free concert ...

One of the suspects in the bombing plot of Lady Gaga's record-breaking concert in Brazil reportedly had a sinister motive ...

A suspect behind the foiled terrorist attack at Lady Gaga's Brazil concert believes she is a "Satanist" and was planning a "satanist ritual" ...

One of the men accused of planning a terrorist attack at Lady Gaga ’s Copacabana Beach concert Saturday, which was attended ...

While the showstopping looks of yesteryear failed to appear, so did some of the invite-only soiree's A-list fixtures,.

Lady Gaga just made history surpassing a record previously held by Madonna. Get all the details here and see how she ...

Lady Gaga made history in Rio with the most-attended free concert by a woman, which sparked a major Spotify surge as several ...