The Pretty Reckless singer took to the stage in Glasgow and in error thanked the 'English' crowd.
The 17-year-old was met with a barrage of boos after describing the audience as 'the craziest crowd in the whole of England'.
Audience member Paul Krane told The Daily Record, 'People began to cheer as they presumed she was going to say Scotland, but when the penny dropped all you could hear was boos.'
She is said to have carried on with the show without noticing her slip-up, but she later took to Twitter to apologise.
She wrote. 'Glasgow, I love you, I now HAVE to tour SCOTLAND (haha, sorry bout the slip up!) (sic).'