I was going to say Instagrammers can make their photos look like whatever they want and like you I would not fat shame her, been there and done that as well this lockdown and I am sure she knows we can see it on the show. They have been doing their own make-up and she would not want to do all that messing around every show making her face look fatter so looks like she has gained.
When she was on LW with the actor who plays Vinnie she was sat at a desk so you could only really see her face, not the rest of her body and I never heard a mention of a fat suit.