Superstar Adele has shocked fans by announcing the postponement of her Las Vegas residency, one day before it was set to kick off, saying Covid has rendered it impossible to move forward.

The singer, whose fourth album 30 is riding high in the charts worldwide, made the tearful announcement via Instagram today.

She explained that the residency, first announced last November, "wasn't ready" due to Covid and other production delays.

"Half my crew, half my team are down with Covid – still are. It's been impossible to finish the show. I can't give you what I have right now, and I'm gutted," she continued.

"I'm sorry it's so last-minute. We've been awake for over 30 hours now trying to figure it out and … we've run out of time. I'm so upset and I'm really embarrassed and I'm so sorry to everyone that's travelled again. I'm really, really sorry. We're on it, we're going to reschedule all of the dates, and I'm going to finish my show and get it to where it's supposed to be."

She continued to apologise before letting fans know that she’s already in the process of rescheduling the dates.

“We’ve been up against so much and it just ain’t ready. I’m really sorry. Sorry.”

The residency is in support of the 15-time Grammy-winner’s fourth studio album “30,” which debuted at No. 1 on the Billboard 200 as well as No. 1 on album charts in 30 countries.