Mariah Carey brought down the house with a medley of her 1990 debut single 'Vision Of Love' and her new single 'Infinity' at this year's Billboard Music Awards on Sunday in Las Vegas. 

Following a video tribute to the legendary chart-topper, 'Las Vegas' newest resident headliner' appeared in an appropriately sheer and glittery confection to show off her signature runs (and high notes!) as Laverne Cox and Ellen Pomeo bopped along.

Check out the performance below: