The incident occurred when the aspiring country singer, 23, allegedly stopped at the chain sandwich shop Pita Pit with an unidentified female friend. Her friend was hit by a bottle, which led Spears to drag her to safety behind the counter. She then waved around a serrated bread knife to stop the scuffle.
TMZ reports that cops were called but Spears' friend did not want to press charges. No arrests were made.
Britney Spears' younger sister has not hinted at any troubles on social media since the fight. She posted several photos of her 6-year-old daughter Maddie over the holidays, and was all smiles while celebrating a friend's birthday on Dec. 27.
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