Jenelle Evans is hitting back at her body shamers with a defiant twerk.The reality star, 28, struck back at her trolls on Instagram, where she posted a video of herself twerking by her pool in a bikini.'When people talk about my weight, I'll just keep on dancing,' she captioned the video, posted Wednesday. 'I'll just keep dancing':Jenelle Evans is hitting back at her body shamers with a racy twerkAs Jenelle proved, she isn't letting trolls stop her from dancing.The video began with the former Teen Mom star relaxing in the sunshine as she lip synced along to the song Doin Too Much By Kash Doll.