Don’t mess with Jamie Lynn Spears, especially when she gets her hands on a 7-inch blade.

Britney Spears‘ younger sister was at the Pita Pit in Hammond, Louisiana, last month when her friend got into the middle of a brawl between some men.

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The incident occurred in December, however TMZ released video footage from the security cameras on Tuesday which clearly shows the former Nickelodeon star coming to the rescue.

In reaction, Spears, 23, calmly walked around the counter and picked up a huge knife, waving it at the men, which seemed to calm things down momentarily.

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From the looks of it, a male worker at the sandwich shop seemed to stop Spears — who is the mother of 6-year-old Maddie — from getting too violent with the knife.

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He can be seen blocking her as she rounded the counter, leaving her to turn back and wave the blade over the counter, away from the men engaged in the brawl.

Watch the video here.