Moment Britney Spears' younger sister Jamie Lynn pulls a knife to break up sandwich shop fight

Britney Spears' younger sister,  Jamie Lynn who is a former Nickelodeon star singer, seen brandishing a seven inch bread knife in CCTV footage captured during the showdown, which happened last month, pictured center and left. 

TMZ reports that the incident occurred when Jamie Lynn was visiting the health food wrap chain for a late night snack and her female companion was allegedly hit with a bottle. The 23-year-old is understood to have grabbed it from a kitchen countertop after her friend got caught in the middle of an argument at the Pita Pit in Hammond, Louisiana. Jamie Lynn can be seen pulling her pal out of the fight, before finding the serrated knife and pointing it at patrons. She famously shocked fans in 2007 by revealing she was pregnant aged just 16, which drove her blossoming career as a Nickelodeon actress to a halt.