Lady Mary, Lady Edith, and Lady Sybil wore these

 

Downton Abbey styles you can sew and wear yourself: Poiret style gown here, 

Model T dusters here, and dropped waist dresses here.

Versace, folded in an envelope

More designer patterns.

The envelope needs some surgery, but look at that side hip ruffle. I say make it in a mid-weight crêpe de Chine.  There are very few Versace designs that Vogue made patterns of, this was no. 2375. I wish this draping style or even just sarouel trousers, would make a comeback in the US. (Update July 2016: Oh, I guess they have...)