Jenelle Evans has never been one to let cooler heads prevail, and her latest stunt is proof of that. Reinforcing the fact that her son Jace is better off with her mom, the Teen Mom 2 star was captured on one of her scummy friends' iPhones, beating the heck out of another woman while her friends cheered her on. TMZ posted footage of the incident, where the 19-year-old obviously instigates the fight with Britany Truett, calling her names and getting in her face. Jenelle's friends egg her on until she pops Britany in the face, then pummels her on the ground, giving her a black eye, cut lip and a bite mark on her breast (oookay...). Of course the two, friends for seven years, according to Britany, were fighting over a boy - specifically Jenelle's ex, Kieffer, who allegedly made a pass at Britany. Since the brawl, Britany tells TMZ that the girls have been involved in a catty Facebook fight since it happened, but Britany doesn't plan to press charges. That's a good thing, too, since the Brunswick County, N.C., district attorney has their eye on Jenelle as it is. The D.A. launched an investigation, discussing the matter with both sides, but since Britany won't press charges, Jenelle dodged a bullet. Britany says she wants the whole thing "to go away" - us, too.

Looks like Britany had a change of heart late Sunday. TMZ reported Monday morning that after the D.A. saw the video of the fight, Britany decided to press charges. Jenelle was booked and posted bond, and the police netted Kieffer, who was at Jenelle's house when police came to get her. He was booked on an outstanding warrant for a cocaine charge. Jenelle's attorney tells TMZ, "Based on the information that I have received, I believe Jenelle was set up."