An old garden smock..?

[greenerfingers]

This is really bothering me but I can't seem to find the word I'm looking for anywhere. Does anyone know another word for a garden smock? Ladies would wear them over their dresses and garden, I think it began with b. I've been Googling and nothing comes up. It's just really bothering me

falbala?

its got a b in it

pinny
barmcloth?

No none of them. I've racked my brains and thought maybe it's a muumuu? But did I just make that up . A floral gardening overdress thing.

Tabard?