I’ve been making clothes for myself for decades. I stopped being able to buy pants that fit without alteration since my early 40s; hence my long-term quest for pants patterns and techniques for fitting pants that would yield me something that fit me. My top measurements are closer to a single size although for the past decade I’ve avoided fitted shirts, t-Shirts, etc. because my waist has slowly, but surely, increased and that affects how any top I might make will fit.
I was laughing a couple of weeks ago with MaryAnn (a sewing pal) about a FBA (Full Bust Adjustment), saying what I need more is a FTA (Full Tummy Adjustment). She got up, went into her sewing room and returned with a book:
Everything you want to know about fitting patterns is here and if your question isn’t answered in the book, it will be found in Jenny’s blog: Cashmerette Sewalongs + Tutorials. Her foray into garment making for largish women is very informative. Her learning to make garments for herself led her into pattern making for curvy women. She’s recently introduced pattern sizes from 0-16 (the original sizing was 12-32). These simple, generally unadorned garments are suitable as a place to start for anybody. She wants women to look good in their clothes and to feel somewhat stylish.
While the book explains the complete range of adjustments in great depth, Jenny starts by describing “grading” – how you use today’s multi-size patterns to fit the different parts of your body. My challenge is I’m right between her smaller sizes and the larger sizes. With a size 12 bust, a size 20 waist, a size 8 bum, I can’t actually work within a single size range. I’m about to write Jenny to ask her advice concerning which size range I should be working in. I’m guessing because I’m a smallish person she’ll recommend working in the 0-16 range and grading my waist beyond the pattern rather than working in the 12-32 range and grading beyond the pattern to fit my bum. I’m going to take the basic pants pattern from the back of the book and size it to fit me (it’s a 12-32 pattern) to see where I get with it. If I’m able to get a fitting muslin using a graded sloper based on this pattern, I’ll be able easily to design whatever features on want on my pants from there.
Let you know how I get on!
jmn 
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I look forward to your progress on pant fitting. Currently, I make all my own clothes and am frustrated by pants. I enjoy your blog immensely and finally changed my password and made the roundabout route to get back to finally making and leaving a comment!
Donna, pants fitting and making is difficult and frustrating because you’re working from a flat piece of paper and you’re trying to create a garment that is curvy in a number of different locations that are different on everybody, and your body changes constantly! Y
You can’t count on a pattern you got to work once to work with a different fabric that has a different weight or a different amount of give (stretch). You can’t know for sure a pattern you made six months ago will fit you today! Unlike a top or a dress or a skirt which fits more loosely, pants (particularly today’s styles) fit closely, so there’s not much forgiveness in fitting – they fit and are comfortable, or they’re not and you start over again.
I’ve been chasing patterns and ideas for fitting pants for at least 30 years! At the moment, the closest I’ve come to getting a pattern to work is “Top Down, Centre Out” which fits the waistband first, then drapes the pants pieces from that, making the adjustments in the toile/musin as you’re making the pants. That’s why I just make “wearable muslins” (prepared to discard the project) because as far as I’m concerned each new pair of pants (from the same pattern) is still a work in progress, never a sure thing.
I meant to include a link to top Down/Centre Out
https://thecrookedhem.net/2022/04/25/top-down-center-out-with-the-eve-trousers/
in case you overlooked it.
BTW, the originator of Top-Down/Centre-Out is Ruth Collins: https://www.instagram.com/ithacamaven/?hl=en
The article link above is a great synopsis of Ruth’s way of fitting pants.
There’s one more great article: https://blog.cashmerette.com/2022/10/how-to-sew-pants-that-fit.html
Also straightforward.
Keep at it. You’ll make progress and get comfortable pants most of the time!