Also a great thing about using flannel nightgowns for girls in winter is that they breath and wick away sweat, but at the same time are soft and warm. The polyester fabrics for most pj's are essentially plastic bags for your body since they are made out of plastic. I notice too that the few we have gotten fall apart very easy and after several washings and drying's they start to get a tacky feel to the fabric which I hate. Flannel, however, just gets softer and softer. Some of my daughters nightgowns were passed down from her big sister, and those were bought at thrift stores. Yet they are still holding together with no holes or ripped seams.
So while at the thrift shops, which by the way is the best place to look for a good selection, I go to the women's nightgown sections and look through the small and extra small sizes. I have found dozens of cute flannel nightgowns from name brand, highly priced, companies in brand new condition because women now days don't really want to wear old fashioned flannel nightgowns. But my little girl loves them! And with just a few adjustments they fit her perfect coming down to her ankles and wrist. All I do is usually take in the shoulders a little and sometimes take in the bottom hem to make them fit.
I also do this with light cotton summery gowns. Princess in Waiting loves to wear them and just look at some of the lovely finds I have made! This white lacy gown is 100% cotton and very soft. It comes all the way down to my daughter ankles and is not see through because it has a double layer. I just took in the shoulders and the arm holes and now it fits her perfect!
the bottom ruffle detail
This was a small woman's flannel gown and I didn't have to do anything to it
Here is the fabric print of small flowers
here is a classic plaid with lace at the wrists and neck, but very soft lace. I had to take up the shoulders to fit her so the neck wouldn't gape. I have probably 7 flannel nightgowns for her, way more than I need but as they will last several years it's ok.
Ok I just found a womans one, which I love because I wear flannel nightgowns too, and that is a great price!