I bought this outfit for my customized Jonah doll.
I like the shirt quite a bit, though the buttons are a bit hard to keep buttoned. Plaid, design, colors, and texture work out great and would fit a 10 year old well. A- to the shirt due to these factors.
The corduroy trousers...let's just say that they are VERY tight on my Jonah. Jonah is a JLY 13. I do not know if Jonah is PM or Mattel- given the very pale skin of the doll I got (which worked out great for Jonah) it could be PM, but the body does not seem as chubby as that of my PM Samantha.
And Jonah does have boxers on. It is possible that this outfit can fit fine over Molly's bloomers- and it would go perfectly over regular panties like those in Molly's underwear set.
I do not know when this set was retired- so it is possible they made slimmer ones after the takeover and my doll may have been older. But they do not fit so well. B for the trousers due to this. Otherwise, the color and texture are fine. The design definitely seems period accurate- and more unique than run of the mill blue jeans.