Which Teen Mom Star Showed Off Her “Guns”? (PHOTO) 1 of 2 Previous Autoplay Next Share Tweet January 18, 2013 at 07:00PM EST by Julia Lynn Rubin Related: Teen Mom, Guess Who? full size Credit: Instagram Guess Who? Someone’s been working out! This Teen Mom star recently posted a pic to her Instagram showing off her biceps and rockin’ bod. But who could this blonde beauty be? Click through to find out.