It’s not like adidas isn’t aware of the the plus size community and the power of the plus size dollar. Prior to this the IVY PARK launch, Adidas launched a size inclusive collaboration with the plus size brand,Universal Standard, in October 2019. The Adidas x Universal Standard collection is available up to a size 4X.
https://thecurvyfashionista.com/plus-sizes-adidas-and-ivy-park/