Hello, amamxr, there is actually a third Kelly style and what it has is stitching on the outside edges like the regular Sellier...but, it is made of a mou ( very soft ) leather such as clemence or possibly togo. The inside leather construction is also a bit different.
So, that with this style you have a Sellier Kelly that can slouch and actually fold up. Sounds unbelievable until you see one and see what I mean.
Otherwise, I believe the regular Selllier is great about keeping her shape.
Many of us also like the Retourne and like a bit of softness. This is the style I prefer. I like seeing the draping of the leather.
I like your Kelly! The skin is clemence? She's lovely and looks so soft.