I don't jump on trends too quickly, just because they then go out of style in a season. However, I saw this Dorothy Perkins shirt (yes, it's supposed to be a shirt) at a rummage sale last week, and thought I could totally make it work. I added a belt, and here it is - my own second hand spin on the Peter Pan collar.
Second hand I bought:
dress/shirt by Dorothy Perkins, $1
Other:
belt from Urban Outfitters, shoes from Primark