Olga Bra Size Guide & ConverterUS everyday essentials with molded cups, microfiber wings, and familiar even-numbered bands.
Use our Olga fit intel to translate your everyday size into the label's molded bras and smoothing staples without guesswork.
Olga size snapshot
Sizing system
US band/cup sizing with even-numbered bands and double-letter cups (DD, DDD/F, G).
Band range
34–48 extended plus coverage
Cup range
C–DDD
Best for
Olga suits shoppers who want reliable T-shirt bras, smooth cups, and everyday coverage that disappears under clothes.
- Olga bands run close to measured size with moderate stretch for everyday wear.
- Olga cups are shallower; fuller-on-top shapes may need to size up or choose more open necklines.
- Olga designs prioritize lift with laminated fabrics, strategic seams, and wider straps for secure support.
Convert your size into Olga
Pick the brand and size you already wear. We pre-selected Olga on the right so you can see the equivalent in one click.
Convert to Olga
Size Guide
Enter your current bra size and select the brands you want to convert between. The converter will help you find your equivalent size in different brands.
Tips for Best Results:
- Enter your size exactly as it appears on your current bra
- Make sure to select both the source and target brands
- Different brands may have slightly different sizing standards
- Always try on bras when possible for the best fit
Fit callouts worth noting
Bands fit close to measured size
Most Olga bands align with tape measurements, offering a moderate hug without sharp stretch.
Try this:
Begin with your measured band; add the neighbor size if you fluctuate or prefer more or less tension.
Cups lean shallow or push-up heavy
Padding placement and low gores at Olga can crowd fuller-on-top tissue, causing spill at the edge.
Try this:
Sister size up in the cup or choose balconette/demi styles with taller upper cups to trim spillover.
Support-focused details add stability
Olga builds in inner slings, side boning, and reinforced straps that change how the bra lifts.
Try this:
Adjust straps slowly and ensure the inner sling sits flush; swap cup size only if tissue is wrinkling or compressing.
Try-on strategy playbook
Dial in your baseline size
- Run the ABTF calculator or your trusted measurement routine first so the converter starts from fresh numbers.
- Keep your most reliable bra size handy; the converter maps it directly into Olga sizing.
- Note the style you are targeting (plunge, balconette, wireless) so you can sanity-check the fit advice below.
Check band tension once clasped
- Start with your measured band and assess comfort on the loosest hook.
- If you fluctuate between sizes, add the adjacent sister size so you can fine-tune stretch vs. security.
- Use easy return windows to compare band tension across at least two sizes before committing.
Leverage built-in support elements
- Position inner slings and side panels smoothly before clasping.
- Adjust straps incrementally; supportive bras respond quickly to small strap changes.
- If boning digs when seated, compare with the sister size up or a softer cut.
Keep exploring
How to Measure Your Bra Size at Home
Step-by-step measuring tips before you add new pieces to your drawer.
Read moreFit Check Wizard
Troubleshoot gaping, spillover, or band riding in minutes with guided diagnostics.
Read moreSister Size Explorer
See every sister size combination when you need extra breathing room or cup depth.
Read moreKeyword prompts people use
Use or monitor these search phrases when you are researching Olga sizing. They surface comparison guides, calculators, and real shopper feedback.
Refresh your measurements
Accurate numbers keep your converter results honest. Grab a soft tape and follow the pro guide below before you submit that cart.
Professional Bra Measurement Guide
Essential Tools for Accurate Measurement
Required Equipment
- Soft measuring tape (preferably in inches)
- Non-padded bra or no bra
- Full-length mirror
- Notepad for recording measurements
Measurement Preparation
- Stand straight with shoulders relaxed
- Wear a non-padded bra or no bra
- Ensure the measuring tape is parallel to the floor
- Take measurements in a well-lit room
Step-by-Step Measurement Guide
Band Size Measurement
- Measure under your bust, where the bra band sits
- Keep the tape snug but not tight
- Ensure the tape is parallel to the floor
- Round to the nearest even number
Bust Size Measurement
- Measure around the fullest part of your bust
- Keep the tape parallel to the floor
- Don't pull the tape too tight
- Record the measurement in inches
Cup Size Calculation
- Subtract band size from bust measurement
- Use the difference to determine cup size
- Each inch difference represents one cup size
- Example: 1" = A, 2" = B, 3" = C, etc.
Professional Tips for Accurate Results
Common Measurement Mistakes
- Measuring over a padded bra
- Pulling the tape too tight
- Not keeping the tape parallel to the floor
- Measuring at the wrong position
Professional Recommendations
- Take measurements at least twice for accuracy
- Measure at the same time each day
- Consider professional fitting for best results
- Update measurements every 6 months
Frequently asked questions
Does Olga run true to size?
Mostly yes. Olga bands align with measured sizes, so start with your usual pick and adjust only if style-specific feedback says otherwise.
What if I am between band sizes at Olga?
Grab adjacent band sizes with matching sister cups to fine-tune comfort during try-ons.
Which Olga styles work best for everyday wear?
For everyday wear, look at Olga's full-support bras with inner slings, wider straps, and either multi-part cups or posture panels.
Can I convert from other sizing systems into Olga?
Yes. Olga follows US sizing, so convert from UK or EU using our tool and remember double letters translate differently across systems.