This happened with my latest purchase. An incredible, 100% Silk Whistles jumpsuit.
I picked it up assuming that like usual, I wouldn't be able to squeeze my bum into it (it's a lifelong struggle,) but it was a perfect fit.
It's so soft and comfortable that I could happily live in it.
Similar ones online are £250, which makes my gasp justified as I picked this up for a measly £8.
Long live the Charity Shop.
Lace Bandeau - Primark
Price - £3.00