The Aylin Wrap Dress + Vest is a sleek, architectural wrap dress rooted in 90s minimalism — and one of the things that makes it special is how it's shaped. Unlike most wrap dresses, which rely entirely on the wrap itself for fit, Aylin is structured with a combination of princess seams and a Dior dart at the bust. That combination gives it a clean, tailored silhouette that lies smoothly against the bust.
What Is a Dior Dart?
A Dior dart is a short bust dart that integrates into a princess seam. Rather than ending in a side seam, the way a traditional bust dart does, it ends where the princess seam begins, so the two elements work together to shape the bust. Christian Dior popularized this technique in the late 1940s as a way to create smooth, sculptural shaping across the bust without the abrupt visual interruption of a freestanding dart. The result is a cleaner, more elegant front, and on Aylin, it's what gives it that seamless, architectural quality.
Why Fitting a Dior Dart Is Different from a Standard Bust Adjustment
Because the Dior dart and princess seam work together, fitting Aylin is a little different from fitting a standard bodice. A traditional Full Bust Adjustment (FBA) on a standalone dart requires spreading or overlapping just that dart line. On a Dior dart, the adjustment involves the entire front panel; most of the distribution of the ease happens across the center front panel, while fine-tuning happens along the princess seam. The distribution of the volume across more seams gives you more control over the final shape, and the results are seamless and professional-looking. We want you to feel confident every time you wrap and tie it on, so we've put together this step-by-step guide to making a Full Bust Adjustment (FBA) and a Small Bust Adjustment (SBA) specifically for the Dior dart on the Aylin Dress or any other Dior dart you encounter. Whether you're fuller or smaller-busted, this tutorial will walk you through exactly how to add or remove the ease you need — let's dig in.
Do You Need a Bust Adjustment?
To decide whether you need a full or small bust adjustment, compare your high bust to your full bust:
- Measure your high bust snugly above the full bust, across the upper chest and under the arms.
- Measure your full bust at the fullest part of your chest, parallel to the floor.
- Subtract high bust from full bust to find your "pattern cup" difference.
As a general guideline (pattern cup sizing, not bra sizing):
- 1" difference ≈ A cup
- 2" difference ≈ B cup
- 3" difference ≈ C cup
- 4" difference ≈ D cup
How this works with the Closet Core block:
- If you're sewing sizes 0–20 (B‑cup base) and your difference is more than 2", you may need an FBA.
- If you're sewing sizes 14–32 (D‑cup base) and your difference is more than 4", you may need an FBA.
- If your difference is smaller than the base cup for your size range, an SBA will likely give you the cleanest fit.
How to Read Your Toile for Bust Fit
We always recommend making a muslin or toile before cutting into your final fabric, and with Aylin, it really pays off. A muslin will tell you exactly what your body needs: pulling at the bust, gaping armholes, horizontal strain lines across the chest, or a front hem that hikes up are all classic signs you need an FBA. Extra fabric pooling above the bust, a dart that looks too long or "empty," or a hem that drops at the center front all point toward an SBA instead.
To learn more about recognizing these symptoms in a muslin, visit our full guides:
Start With the Right Size
Before you touch the Dior dart, make sure you're starting with the right base size for your shoulders and upper chest.
Pick your size using your high bust measurement first. This ensures the neck, shoulders, and upper chest will be in proportion to your frame — the areas that are hardest to adjust. From there:
- Cross-check with the size chart for your range (0–20 or 14–32) and note where your high bust lands.
- Grade between sizes at the waist and hip if needed, so the princess seams and wrap skirt sit smoothly over your lower body.
- Use your |high bust-full bust| difference (d) to decide how much to add or remove:
- if d is > 1"+ more than the base cup → FBA
- if d is < 1–2" less than the base cup → SBA
Prepare the Pattern
Draw the following lines on the front piece:
- L1 — Starting at the center front hem, up to the wrap neckline, parallel to the grainline. We do this because we are working with a wrap dress, and the sides are not symmetrical.
- L2 — From the center of the dart legs to the apex.
- L3 — One third of the way along the armhole, through the apex and across to the center front.
- L4 — Horizontally along the Lengthen/Shorten line (or midway between the dart and the waist) from the side to the center front.
Cut along L1 from the neckline to L4, and along L4 from L1 to the side seam. Cut along L3 from the center front to the armhole (leaving a hinge at the armhole). Cut along L2 from the side seam to the apex, leaving a hinge at the apex.
Full Bust Adjustment
Trace a line parallel to the grainline across the center, upper and lower pieces for reference. Spread the center lower piece towards the side to add length and width until the distance between the reference grainlines is equal to d/2 or Half FBA. L1 should remain vertical, and L4 should remain horizontal (the reference lines will be parallel).
Reorient the dart towards the original apex and lengthen or shorten the dart as needed so the point is 1"–2" from your bust apex. The width of the dart will be increased — if it becomes too wide, consider dividing it. True the dart, the center front, the armscye, and the side seam.
We're showing this in the Left Center Front piece, repeat for the Right Center Front.
Small Bust Adjustment
Trace a line parallel to the grainline across the center, upper and lower pieces for reference. Overlap the center lower piece towards the center to remove length and width until the distance between the reference grainlines is equal to d/2 or Half SBA. L1 should remain vertical, and L4 should remain horizontal (the reference lines will be parallel).
The width of the dart will be reduced or closed. If the dart is NOT completely closed, reorient the dart towards the original apex and lengthen or shorten the dart as needed so the point is 1"–2" from your bust apex. True the dart (if there is still one), the center front, the armscye, and the side seam.
We're showing this in the Left Center Front piece, repeat for the Right Center Front.
Once you've made and tried your muslin, fine-tune the shape of the princess seam if you see it's necessary. Happy sewing!
