The Grammy-winning singer was performing "Hello" while trying to run up a set of stairs in her floor-length gown when she almost took a tumble, causing her to hit a "dodgy note", reported AceShowbiz.
"I don't know if you saw, but after you did your marvelous sing along to the 'Hello' chorus, I nearly tripped up those stairs did you see me, Oh My God!" Adele told the crowd.
"I've never worn a dress like this, I'm basically celebrating 'Beauty and the Beast' coming out... But I forgot to lift it up and tried to run up and nearly fell over," she added.
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