


How to know how much to add to this sewing pattern?
**this is the muslin/toile**
I'm working on a simple PJs set (McCalls M8056). I'll be using similar fabric and weight (thrifted sheets). I accidentally ordered the smaller size, thinking the pattern was all-inclusive 🤦♀️ I cut a size 16 (waist size, also largest size on the pattern), but according to my hip measurements, I need a size 22. Ive been reading on pattern grading and have read that it becomes difficult going up more than 2 sizes.
I'm wondering if i can just add an inch or two to the sides/hips alone and leave the crotch as-is? Will that affect the overall fit? I have plenty of fabric to mess around with a couple more toiles - although I'd rather not have to make another 😆