Adele barely got through opening night of her Vegas residency ... repeatedly dissolving into tears, saying she was super scared to take the stage.
The Ceasar's Palace Colosseum was unsurprisingly packed Friday night, as Adele told the crowd she was "so scared and nervous."
As for why ... as you know, the residency was scrapped at the last minute in January after there were production disputes and COVID concerns. She took heat for the cancellation, and a reboot seemed uncertain.