This year, I decided to make a chicken Halloween costume for Toula.
2 white feather boas
1 white onesie
I started at the top of the onesie loosely wrapping the boa around the onesie in a spiral formation, pinning it on the inside every 6" or so. About half way down, I needed to start the second boa. Be sure to avoid the arm holes so you can get your little one in and out of it through the bottom snaps.
I had her wear an additional undershirt so the pins weren't against her body. She didn't put up a fuss at all! Such an easy, inexpensive costume that no one else had at the party (sorry Spider-Man and Elsa).