When I first had this idea, I wanted to make hers chocolate brown with a pink or green lining. I quickly changed my mind when I saw this great print from Alexander Henry. This is so perfect for her, and looks great against the white.
There are matching wide leg lounge pants as well. The black and white trim is from Alexander Henry too.
This is the same pattern I used for Addison's robe, you can find details here.
I also got several emails about the pants. I used a basic pants pattern, but made the legs wider but simply cutting the fabric 2" wider on each leg. Then, cut back towards the pattern, and followed the top part like normal.
I hope that helps. If there are any questions, please let me know, and perhaps I can explain it better.
Just one more robe to make and I will be done!