As her residency at Planet Hollywood comes to an end, Spears makes the most of these last few months in Las Vegas.

How much singing, dancing, grinding, hair flipping and sequined bodysuits can one diva pack into 110 minutes? In Lopez’s case, more than Britney and Mariah combined.

Reviews of Lady Gaga’s current tour, artRave: The ARTPOP Ball, have been mixed, but none of that matters to Gaga fans. She returns to the MGM Grand Garden Arena on July 19.