How to Measure Yourself for a Prom Dress (Step-by-Step Guide)

If you’re ordering your prom dress online, accurate measurements are everything, and once you know how to measure properly, choosing your size becomes easy.

This guide will show you exactly how to measure yourself for a prom dress using three key measurements: bust, waist, and low hip. Save this before you shop - it will help you order with confidence and reduce the chance of needing a return.

What You’ll Need

• A soft tape measure
• A mirror (or a friend to help)
• Wear your non-padded bra (or a similar bra to what you’ll wear on the night)
• Measure over fitted clothing (or underwear) for the most accurate result

Before ordering, we recommend checking our measurement-based size guide here: STUDIO MINC Size Guide.

Step 1: How to Measure Your Bust

BUST: Measure around the fullest part of your bust. Keep the tape measure horizontal across your back and snug (but not tight).

• Keep your arms relaxed by your sides
• Do not pull the tape too tight — it should sit flat against the body, with some tensions
• Make sure the tape is level all the way around

Step 2: How to Measure Your Waist

WAIST: Your waist is usually the smallest part of your midsection. A great trick is to tie a ribbon/string around your waist — wherever it naturally sits is your true waist.

• Measure around that point
• Keep it snug but not restrictive
• Stand relaxed (don’t suck in)

Step 3: How to Measure Your Low Hip

LOW HIP: Low hip is located approximately 20cm below the waist. This is typically the fullest part of the hips/bottom.

• Measure 20cm down from your waist
• Wrap the tape around the fullest part of your hips
• Keep the tape parallel to the floor

How to Choose Your Size (Once You Have Your Measurements)

Once you’ve measured bust, waist, and low hip, compare them to our size chart: View Size Guide.

• If you’re between sizes: choose based on the dress style (fitted styles usually require more precision through the hip).
• If one area measures larger: choose based on the dress style. For a fitted waistline chooses based on your waist measurement. For a snug silhouette, be mindful of your Hip measurement. 
• Alterations are normal: it’s very common to tailor a formal dress for the perfect fit.

Planning ahead matters - here’s our guide: Prom Dress Shopping Timeline: When Should You Order?

Why Ordering Your Prom Dress Online Can Be a Great Choice

• More exclusive styles: access unique designs you won’t find everywhere locally
• Shop anytime: no appointment pressure, no rush
• Time to think: compare styles, colours, and silhouettes calmly
• Better prep: you can order early and plan alterations
• Worldwide access: Studio Minc ships internationally with tracked express couriers

Before purchasing, we recommend reading our return policy to make an informed decision: Return Policy.

Prom Dress Fit Tips (So You Feel 10/10)

• Structured corset styles: focus on waist measurement accuracy
• Fitted/mermaid styles: low hip measurement is critical
• Ballgowns / fuller skirts: waist fit matters most

Want trend inspo while you shop? Read: Best Prom Dress Trends for 2026.

Featured Prom Dresses (Shop The Look)

Now that you’ve measured, here are a few Studio Minc favourites to shop:

Posie – Pink

Twilight – Pink

Mystique – Black

Rendezvous – Black

FAQ: Measuring for a Prom Dress

What if my bust and hips are different sizes?

Choose based on the dress style. If the back is adjustable with a lace up then it may fit a larger bust. Choose your size based on where the dress is most rigid.  

Should I size up if I’m in between sizes?

It depends. Read the specific fit information for your dress and take the style into consideration. You also need to take into account if you want a very snug fit or slightly relaxed. 
When in doubt, we recommend emailing our team for support because we'd rather avoid costly exchanges and help you nail the size the first time.