The seamstress-ing was done by Trish Banner at Cottage by Design. I came across her blog some time ago when I was researching slipcovers with skirts vs. those without and I was so impressed with her work. Though Trish lives on the opposite coast from me, I was able to send her the old slipcovers to use as a template.
She is making new slipcovers for all the living room furniture, including this little settee in the foyer:
Trish is still working on the furniture covers themselves, but I couldn't resist sharing a sneak peek at what she's done so far.