I made this adorable nightgown from a tutorial
over at Gingercake. It was super easy and turns out great. She only has it available in a 4T, but it's just a matter of resizing the pattern pieces. I left it the same because my daughters 4, however, she's small for her age, so it turned out a tiny bit large.
You can't see it in the picture (and honestly you can't really see it unless you're looking really closely in real life) but there are darker pink vertical stripes. Also there are darker pink flowers on the ruffle. (The best part about this is that the ruffle was already a part of the pillow case so I didn't have to do anything.)
In her tutorial she used a button closer, but she suggested also using ties if you preferred. I just happened to have pink bias tape in my stash, so I chose that route for binding the neck and the back and just let it go out to be ties. All I had to buy to make this adorable nightgown was the pillowcase which I got at the thrift store for 99 cents. Best 99 cents I ever spent!