You find a dress you love, but choosing a size is less straightforward. Your bust points to one size, your waist to another—or you usually wear different sizes depending on the style.
Should you size up or down?
Start with the part of the dress that has the least room to adjust. A stretchy waist can offer flexibility, but it cannot solve a tight bust or restrictive sleeves. A larger size may offer more room, but it can also change how the shoulders and neckline sit.
Here’s how to work through the decision, with examples from RWJ Curve.
1. Start with your measurements, then check what the chart means
Use a soft tape measure and wear the bra or undergarments you expect to wear with the dress. Keep the tape level and comfortably close to your body without pulling it tight.
Measure your:
- Bust: around the fullest part.
- Waist: around your natural waistline.
- Hips: around the fullest part of your hips and seat.
Then check the guide for the specific dress. Before comparing numbers, find out whether it lists body measurements or garment measurements.
Body measurements describe the person the size is intended to fit. Garment measurements describe the dress itself, which may include extra room for movement—or stretch that affects how it fits.
Do not treat the two as interchangeable. If the guide is unclear or measurements are unavailable, ask for clarification before choosing.
2. Find the area that needs the most attention
Different silhouettes fit differently. Use the dress’s construction to decide where to look first.
| Dress detail | What to check when you are between sizes |
|---|---|
| Defined bodice with a flowing A-line skirt | Bust and upper-body fit; still check available hip measurements |
| Smocked waist | The waist’s intended fit range, plus the bust and sleeves outside the smocked area |
| Wrap-style neckline | Bust coverage and whether the neckline stays in place |
| Long sleeves | Upper-arm room and comfort when reaching forward |
| Close-fitting skirt | Hip and seat room when sitting and walking |
Suppose your bust falls into the larger size on a body-size chart, while your waist falls into the smaller one. In a dress with a defined bodice and flexible waist, the larger size is a sensible starting point to assess. Confirm the shoulders and neckline too.
A size label is only the beginning of the decision.
3. Look closely at where the dress stretches
Smocking creates flexibility in a particular area. It does not mean every part of the dress stretches equally.
Take the RWJ Purple Tiered V-Neck Maxi Dress. Its listed features include a smocked empire waist, puff sleeves and a tiered A-line skirt. The fabric composition is 98% polyester and 2% spandex.
For this style, check the bust and upper-arm fit as well as the waist. The smocked section offers flexibility, but the spandex percentage alone does not tell you how far the whole dress will stretch.
Also consider where the waist sits. An empire waist is higher than your natural waistline. If you prefer definition lower on your torso, changing size may not give you the silhouette you want.
Fit includes where a dress sits on your body, as well as how much room it has.
4. Separate fabric composition from construction
The RWJ Navy Blue Square-Neck Side-Slit Maxi Dress is listed as 100% polyester, with a smocked empire waist and an A-line skirt.
This illustrates why the fiber label alone is not enough: the smocked construction provides flexibility at the waist, even though the listed fabric contains no spandex.
When considering this dress, check:
- Whether the bust has enough room without pulling.
- Whether the square neckline sits comfortably against your body.
- Whether the sleeves allow you to reach forward easily.
The side slit can help with movement at the skirt. It does not add room through the bodice. Choosing a smaller size because the skirt looks flowing may leave the upper body too close-fitting.
5. Check what a wrap neckline can actually adjust
A wrap-style neckline does not automatically mean a dress has a fully adjustable wrap closure.
The RWJ Burgundy Tiered Wrap V-Neck Maxi Dress has a listed wrap V neckline, empire waist, long sleeves with smocked cuffs and a tiered hem. Its description does not establish that the entire dress adjusts like a true wrap dress.
For this style, focus on the bodice measurements and neckline coverage. Do not assume you can tighten or loosen the whole dress to bridge two sizes.
If you are unsure, ask whether the wrap front is fixed or adjustable before ordering.
6. Choose for sitting and moving, too
Once you try on a dress, give yourself a few minutes to move in it:
- Sit down and check for pressure across the bust, waist and hips.
- Reach forward as if hugging someone.
- Raise your arms gently and see whether the neckline shifts.
- Walk normally and check the hem with your intended shoes.
Pulling, restricted movement or a neckline that needs constant adjusting are reasons to reassess the fit. So are slipping shoulders and excess fabric that make the larger size feel unstable.
Sometimes another silhouette will suit you better than either of the two sizes.
Still between sizes? Ask a more specific question
Instead of asking only, “Does this dress run large?”, send the product link, the two sizes you are considering, and your bust, waist and hip measurements. Include your height and whether you prefer a closer or more relaxed fit.
You can contact RWJ at cs@rwjcurve.com for sizing help. If the product’s measurements are not available, request them before placing your order.
The right choice gives you room where you need it while keeping the neckline, shoulders and waist comfortably in place. Start with measurements, look at the construction, and choose a dress you can enjoy wearing beyond the first mirror check.