The girl, who had braces on her teeth, accidentally nicked the Girls Aloud singer as she embraced her.
Cheryl, 25, was then quickly escorted back into the Malmaison Hotel in Belfast by security.
'She was left shaken,' her rep tells The Sun. 'As a result the girls have been more cautious greeting fans.'
Meanwhile, Cheryl is reported to have been offered a £2.1million deal to commit to ITV.
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