She did it to try and restore the peace. Jamie Lynn understands you should always bring a knife to a fist-fight.

Last month, Britney's sweetheart kid sis Jamie Lynn found herself at a Louisiana Pita Pit restaurant when what appears to have been a massive fight broke out. Not content to run for safety, JLS sprung into action and went looking for something that could cut a bitch. TMZ just released their exclusive security cam video.

According to TMZ, Spears went looking for some blades when one of the brawlers reportedly knocked over her friend. The stumble inspired Jamie to retaliate by opening up some skin, but luckily, the video reveals she didn't do much more than wave her weapon around and slam it on the cutting counter.

Sources: TMZ | h/t Defamer