I would say that I doubt it. I have been trying to figure out a logical way to enlarge the pattern at a printers but I just don’t know what percentage to scale up and frankly won’t be bothered until the sun actually decides to come out in our rainy northwest neighborhood. I don’t have my book handy, but I made the second largest size for my 3yo (the size that was recomended)and it is a snug fit on my 2yo. Granted, it says to both measure your childs head first and my kids have notoriously largish noggins, but the kids were already in bed and I knew it it didn’t fit the biggest it should fit the smallest. Surely the middle piece (the band?) will measure about the circumpherence of the finished head size minus seam allowances, so in theory you would just need a measurement of her and then enlarge to fit. In Theory. But then again, it is 5:40 and I am on some strong pain meds from surgery, so don’t take my word for it! 🙂