By Sarah Tetteh Tammy Slaton beamed as she showed off her incredible weight loss in a sweet video on TikTok. The 1000-lb Sisters star has managed to lose 440lb (31.4 stone) and has been impressing fans with her weight loss journey. She showed off her new-found confidence as she posed in front of the camera for a social media video where she looked shimmery and radiant. TV viewers have followed Tammy through the ups and downs of her journey, from dropping two dress sizes to shedding enough pounds to finally walk unassisted. READ MORE: 1000-lb Sisters’ Tammy Slaton declares she’s ‘still in love’…