I bought this doll a few years back as my 'model'. We bought the older granddaughters dolls for Christmas and I made a couple of outfits for them. I couldn't take their dolls out of the box to test the clothes on so it made sense to just buy an extra.
My doll is an 18 inch Madame Alexander doll. Very much the same size as the American Girl dolls.
There are some fun free patterns for this size doll.
Another great resource is
I found this book second hand and have really enjoyed it. It is full of fun patterns for 12, 14, 16, and 18 inch dolls.
Happy sewing - keep your bobbin bobbing...