Tammy Slaton has been warned to "make better decisions" as fans have become concerned she's breaking her strict diet.
The 1000-lb Sisters star, who spent time in a food rehabilitation facility, took to Instagram on Thursday to share snaps of herself holding a bottle of Diet Coke as she joked she's become an "ambassador" for the drink.
In the pictures, Tammy showed off her much slimmer face, having lost more than 300lb (21.4 stone). The 36-year-old wore a pink top and added a filter to the photos.
