I have mixed feelings about the push in marketing/advertising toward including more plus-sized models.
I understand the business aspect. An increasing percentage of women (and men) are overweight and if more widely accepted and widely admired ads feature people who look like them, the underlying product might sell better.
But does that not just encourage more women to get heavier? Plenty of us got sick of women saying they had JayLo butt, when we were privately thinking, no the camera adds 5 pounds, so in reality your butt is way bigger than JayLo's, and JayLo has a better face and better boobs than you do anyway.
And this famous for a day Plus-sized Barbie has a pretty face and she is too young for anything to sag. It won't be a good look in 10 years unless she loses some weight. I can think of at least one provider who was "bigger" (probably one size less than Barbie) who I really liked for a few years but lost interest in them sooner than I would have for a slimmer girl with the same performance.
All in all, I would prefer that the modeling industry stick to the old female hardbody prototype.