Mariah Carey cancels show one week into her Las Vegas residency

Las Vegas - Three shows into her Las Vegas residency, Mariah Carey says bronchitis caused her to cancel a Wednesday night show at The Colosseum at Caesars Palace.

A representative for Carey confirmed on Thursday that a doctor diagnosed the pop icon with bronchitis. Chris Chambers with the Chamber Group says the singer famous for hitting high notes will be back on stage Saturday and Sunday and will still perform Sunday at the Billboard Music Awards.

Chambers didn't say if Carey's canceled performance would be rescheduled.

Carey is the latest to join The Colosseum's roster after debuting Mariah #1 to Infinity 6 May, which catalogues her 18 No. 1 singles in chronological order.

Carey was scheduled to perform 18 shows in May and July on Wednesdays, Saturdays and Sundays before this week's cancellation.

This is how Mariah told her fans on Instagram:

Hey guys.. I've been fighting bronchitis for the past few days.. almost better but on mandatory vocal rest per doctor's orders. I'm so sorry to cancel tonight's show but I promise to make it up to you!!! Love you always, MC

A photo posted by Mariah Carey (@mariahcarey) on May 13, 2015 at 9:32pm PDT

And here's Mariah yesterday, prepping for the Billboard Music Awards:

At rehearsals for the @OfficialBBMAs #notalking #nosinging #whispering @bigjimwright

A video posted by Mariah Carey (@mariahcarey) on May 14, 2015 at 9:35pm PDT