It’s toile time! Bring on the muslin mania! (Seriously, who actually enjoys this part?) After part 3, where we made some basic fitting adjustments and sewed up the toile, you’re now ready to try it on and see how it looks.
Here’s how to go about it.
First, get the crotch in the right place. The central crotch seam – where you’ve got a cross-shape as the four key pieces meet – should be directly underneath you, and relatively close-fitting so that it can (but doesn’t always) touch whatever you’re wearing underneath. If you’re large of thigh like me, there’s a real chance you’ll have to rip open some seams to do this, so this is why those extra-deep seam allowances were a great idea. If you’re slim-waisted, you might need pins or elastic to hold your toile up.
Once you’ve got the crotch seam in the right place start by assessing the crotch depth – the vertical waist-crotch distance. It’ll be easier to assess this at the front than the back. If you checked and adjusted the crotch depth in part 3 it should be very close to perfect. If it needs fixing, do that, and if needed, make another muslin before you alter anything else.
Once you’re happy with the crotch depth, you can turn your attention to the crotch length. Look at the length of the seam that runs around the body from the centre front, between your legs and up to the centre back.
If the trousers look as though they’re trying to disappear up your bum, then you need more length in the back crotch. If you’ve got excess fabric top to bottom at the centre back seam but the crotch and waist are both sitting in the right place, then you need to reduce the back crotch length. If you have ‘smile wrinkles’ emanating from the front crotch area (!), but the hip and waist are in the right place at the side seams, then your front crotch length is too short. Again, if you need to make one of these adjustments do it before fiddling with anything else, and you might need to make another muslin before moving on. For more pictures and examples, I recommend this excellent post from A Fashionable Stitch on crotch length adjustments.
Crotch depth and crotch length are the two critical fit issues for trousers. After that, it starts to feel similar to fitting a pencil skirt or a sheath dress. Your best strategy is to schedule a quiet hour in front of the mirror and play around with some pins, elastic and a willing fellow sewist or failing that, a camera. (That doesn’t sound so good written down, does it?). Fitting problems seem to show up more clearly in pictures than in the mirror.
To assess what’s wrong and learn how to fix it, you’ll need a good fitting book. There are tons of these out there and I haven’t found one yet that’s perfect: clear, intuitive and easy-to-follow. The main contenders are:
- Fitting and Pattern Alteration – incredibly comprehensive, but I don’t find the diagrams and instructions in my second edition copy that easy to follow.
- Pants for Real People – a real bible for a lot of people, and it uses real-life photos. But I don’t buy into the tissue fitting approach – no one wears paper clothes and I always tear the tissue when I try this.
- Colette’s Pants Fitting Cheat Sheet – clear and short (!) but doesn’t come with diagrams
- My current favourite, chapters 5 and 8 of Vogue Sewing (2006). The diagrams in this one are some of the clearest I’ve seen but it’s not as extensive as Fitting and Pattern Alteration.
Once you get into the process, you’re likely to end up making two or three toiles before you find the fit you want. Each one will be better than the last, and you’ll get there in the end, I promise.