Bra Sizing & Fitment Calculator
Find your perfect bra fit in 60 seconds. Our calculator uses standard UK professional fitting guidelines to determine your snug band and cup sizes.
What Our Customers Say
Read reviews from women who found their perfect supportive D-cup fits.
"I struggled to find structured 30D balconette bras that didn't dig in. The Fantasie Illusion recommended by the size finder here is an absolute dream. Dispatched immediately by Uplifted!"
"I used the sister sizing tool to check whether a 32D or 30DD would suit me better in the Freya Deco. The detail on this website is fantastic and the 10% coupon DISC10 worked perfectly."
"I bought an Elomi Cate in 38D. It provides incredible support and side panels which shape so beautifully. Free delivery and dispatch was fast and efficient. Highly recommend this setup!"
D Cup Bra Sizing Guidance FAQ
Answers to the most common questions about D-cup fitting and support.
How does the D cup bra size calculator work?
The calculator determines your bra size by subtracting your snug underbust measurement from your fullest bust measurement. A 4-inch difference indicates a D cup size. Calculated band sizes are rounded to the nearest even number.
Why does the bra size calculator recommend sister sizes?
The calculator recommends sister sizes to help you adjust the underband fit while keeping the cup volume constant. Examples include a 36C for a looser fit and a 32DD for a tighter fit than a 34D.
How often should I recalculate my bra size?
Recalculating your bra size is recommended every 6 months. Breast volume changes due to 3 primary factors. These factors include weight fluctuations, hormonal changes, and natural aging.