Mariah Carey Nip Slip As She Sexes Up Her Stage Act

The National ENQUIRER's own Mike Walker recently caught Mariah Carey's billionaire fiancé snoozing during one of her performances in Las Vegas! But that's a lot less likely to happen now that Mariah's given her stage show a sexy new twist!

The pop diva brought out the big guns — so to speak — when she bared her bod while taking her live show to the AccorHotels Arena in Paris!

The shocking spectacle had Mariah looking daringly hot in the City of Lights!

And it turned out that Mariah couldn't even keep from showing off plenty of skin on the way to the show — with The ENQUIRER catching an unmistakable nip slip!

In the garment's defense, the outfit had a plunging neckline that really did demand some kind of tape to keep Mariah from falling right out of the dress!

According to Mike Walker, Mariah didn't even catch her sweetie snoozing in Vegas. Mike reported that James was super jet-lagged after flying into Sin City from his native Australia — but insisted on watching his honey perform!

But after Mariah hit the stage, he totally fell asleep! Fortunately, two of Mariah's pals were able to  quickly nudge James awake before his trigger-tempered sweetie spotted him missing out on her act!

There's still no doubting that Mariah had every set of eyes wide open during this steamy show!