I mean there's less space between her leg and the cabinet on the left than there was in the pink leggings picture...I think she looks the same tbh...on the right the top is a bit folded up to change the look of proportions and also black is slimming...
Also black is a slimming colour. Why the f would she not wear the exact same outfit in the exact same way if she's trying to do 'progress' pics. Also also, 8 weeks is a long time to show weight loss. She could have been down at LEAST 10-16lbs if she was exerting the bare minimum effort which should be instantly noticeable