What if the secret to a sweater that fits perfectly isn’t in the bust measurement, but in the shoulders? Bristol Ivy has built her design reputation on understanding what most knitters overlook – and it shows in garments that drape beautifully, fit diverse bodies, and last for years. Not by accident, but by design.
In this conversation, she shares the fitting insight that changed her approach to grading, why she sometimes adds stitches for small sizes but decreases for large ones, and how finding the mathematical logic in any pattern makes you a more independent knitter. Whether you’re following her innovative constructions or designing your own, Bristol’s perspective will change how you think about shoulders, shaping, and sweaters that stand the test of time.
When you’re sketching a new piece, what’s the first constraint you set (yarn behavior, shaping, stitch pattern, grading)? And how does that single choice ripple through the rest of the design?
I go different ways depending on the project type: for single-size accessories, it’s a question of choosing or molding the stitch pattern or concept to be easily writable and readable. If I love a lace pattern but it’s going to take 80 rows of charting, that’s a no go! If I were knitting it for myself, I might be fine with it. But once we start talking about approachability and ease of knitting for someone else, I want to find a simpler common ground. It otherwise can really limit the audience for a piece—and take up a heck of a lot more pattern writing time!
For garments or multi-size accessories, I grade everything out for all sizes before I start writing a pattern or knitting a sample. That way, I know that whatever I do is going to work for all sizes, especially if it’s a unique construction. I learned that one the hard way—there’s one sweater pattern I knit parts of three or four times because only *after* I knitted the sample did I realize that the shaping wouldn’t work for all sizes. I will still make some changes during the knitting process, but not huge structural ones without checking that it’ll work for everyone.
You’re known for inventive construction. What’s a “what if…” experiment that failed spectacularly – and the one insight it gave you that still shows up in your work today?
Fiber, twist, and ply can make or break a design. Can you share a time when the yarn’s structure forced you to change the architecture of a piece – and how you “listened” to the yarn?
There are a couple sweaters that will never see the light of day! Most of the time it comes down to right idea, wrong yarn. I tried a really interesting draped construction for a sweater once in a farmy yarn, which unsurprisingly didn’t have the right drape to make it work! I ended up steeking off the extraneous bit and seaming it together for a pretty basic wardrobe staple. The steeked parts show up in my garden—the cut strands are a perfect length for tying up tomato plants! But the idea is still in the back of my mind to revisit in a plant fiber or silk blend to see if it will cooperate.
Fitting and grading both come down to understanding proportion. What are the non-negotiable measurements you lock in first – and how do you preserve the same design feeling across sizes when bodies don’t scale proportionally?
Even with unconventional shaping, fit is super important to me. The most important parts of that are shoulder width and armhole depth—they can take a garment from fitting properly to awkward very quickly! They’re also where a lot of the garment tension and weight hangs from, so making sure they’re stable means that the piece will stay in good shape for longer. Once those two are set, I also think a well-fitting back neck width on a cardigan can make a huge difference. We’re a lot narrower up there than people think, and it’s the difference between a sweater staying on and spending the entire day pulling it back onto your shoulders!
It always comes back to the shoulders! Our width from underarm to underarm—often known as the cross front or the cross back—doesn’t expand at the same proportion as full bust circumference does. That means something like a drop shoulder construction, where the body is worked straight up from the underarm split, will look wildly different on smaller sizes than larger. It seems counterintuitive, but for a drop shoulder to have the same shoulder proportion on all sizes, I may end up adding stitches in the armhole shaping for the smallest sizes but decreasing stitches for the larger sizes! Or if it’s a complex pattern that doesn’t lend itself to shaping, at least making sure the sleeve length takes that additional shoulder overhang into account.
If you could put one concept on a sticky note above every knitter’s desk – something that unlocks cleaner knitting or smoother reading of patterns – what would it be?
Most of the time, there is a logic to what is happening in stitch patterns or construction. In lace, for example, typically the increases and decreases will move across the fabric at the same pace, or one will stay put while the other one moves. Figuring out “okay, every right side row my decrease is going to move one stitch to the left” means you can spot errors and understand your fabric a lot more easily than working line by line. Likewise, things like shawls often have an underlying mathematical structure to them: you will increase X stitches in these locations every Y rows. Figuring out what that structure is means you have the ability to predict what’s going to happen or even change it to suit your style better. Finding that logic in the pattern is a huge step towards agency and independence as a knitter!
Where outside of knitting do you hunt for construction ideas – architecture, biology, choreography – and how do you translate those forms into stitch logic?
Architecture, both on a small scale and a large are huge sources of inspiration for me. From the shape of bridges to the pattern on bathroom tiles, I love seeing how I can translate the logic of these structures to the logic of knitting. I also love looking to any other kind of craft: weaving, quilting, woodwork, baskets—how can I translate that into knitted form? Even if I don’t take it all the way through to a published design, it’s always an excellent thought exercise.
Sustainability in design: what choices do you make so a piece is repairable, re-blockable, and aging–friendly (seam placement, stitch patterns, finishing)?
Construction for long wear is very important to me! I try my hardest to put patterns together that marry yarn choice, construction, and stitch pattern to create something that will hold its shape for a long time. Do I want to do a seamless construction? Then I need to either choose a stitch pattern with some stability to it, like cables or slip stitches, or a lightweight or woolen-spun yarn to create a strong fabric. Seamed constructions give me the opportunity to play with more open stitch pattern or more fluid yarns. It’s a tricky balance—there’s a fine line between knitting something long-lasting and creating something you don’t actually want to wear because it feels like armor!
Walk us through your approach to a pattern. Which steps are your ‘no skip’ essentials, and what systems do you use to catch errors early and keep publishing smooth?
I have a checklist for every pattern I do, which includes multiple re-checks along the way. For a garment or multi-size accessories, I’ll write the pattern and do the math for all sizes, then knit the sample and make edits along the way. Once everything is knitted, I double-check the wording and numbers based on the final product, edit for clarity, and then it goes to tech editing. Even after tech editing, I usually do one more full run-through after I’ve laid out the pattern to see it with fresh eyes in its final format. It’s not foolproof, but I often catch stuff even at the very end!
For single-size accessories, I’m a little freer with the design process. I don’t necessarily always have it all planned out ahead of time! Something like a shawl or a cowl can be a really fun place to play with construction or pick motifs and stitch patterns as I go. I love the logic of garments and the satisfaction of getting all the numbers set at the beginning, but I also love a bit of spontaneity too!
If a curious knitter wants to try “a Bristol technique” today, which single small project or motif should they tackle to experience your design DNA – and what should they pay attention to as they knit it?
Something like the Winterlong Cowl or the Mailou Mitts from my first book, Knitting Outside the Box. The former is a really fun play on shaping within the knitting—it’s a long cowl that features a large-scale motif almost like a bud or blossom opening. It’s one of those patterns that I look back at and wonder how I figured it out in the first place! The Mailou Mitts were an exercise in design restraint. I wanted to work with short rows in them, but it’s difficult to work with short rows on a small scale without it becoming gimmicky or more about form than function. I’m not usually one to brag about my work, but I actually feel like I nailed that balance with Mailou, while keeping them super functional and fun!
Bristol’s thoughtful approach to construction and fit reminds us that great design isn’t just about beautiful stitch patterns – it’s about garments that work for real bodies and stand the test of time. Her emphasis on shoulders as the foundation of fit, her careful grading across sizes, and her commitment to durability offer valuable lessons for knitters at every level.
You can explore more of Bristol’s innovative designs at bristolivy.com, and find her patterns in her shop and through major yarn companies. Happy knitting!

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