This cashmere crewneck is gorgeous and fits perfectly oversized. I am in the medium, love the fit and it's not too long either. (Size up if you want a longer / looser fit.)
I've also linked the Black Friday deal of the same fabric of the sweater for $50! This one it isn't 'oversized' and is more of a tailored normal fit.
The pants are under $50 and run TTS! They're a thick Ponte pant with lots of stretch. I'm in the 10.