'You serve buns... me too!': Underwear free Iskra Lawrence has a very cheeky response after being told off for sitting on the counter in fast food eatery in THAT sexy thigh-split dress.<br /><br />Iskra Lawrence had a very cheeky response to a diner worker after she got told off for sitting on a food counter.<br />The 27-year-old model took to Instagram on Wednesday to post the moment in question, which occured on Sunday night after the SAG Awards.<br />She looked stunning as she broke all the food hygiene rules while sitting underwear-free in her very sexy thigh-split black number. <br />
