This is another of my made-while-visiting-relatives-no-pattern makes.
The cotton fabric was purchased from The Fabric Store in Brisbane. I
cut bias panels and basted them together - 4 pieces for the front and 4
for the back. I then tried it on and adjusted the seams to create
shaping over the bust and at the side seams.
I used folded strips of the fabric for straps and bindings.
I gathered triangular pieces to fit in the zig-zags at the bottom edge.
I used a selvedge as hem.