Let find out your size!

Grab your tape measure and tune in.

Measurements explained

  • Underband

    Underband sizes are in even inches... 28, 30, 32, 34 etc.

    If you measure an even number, that is your underband size (up to 0.5 over, so 32.5 is still a 32 underband).

    If you measure an odd number you will be the next even number e.g. 31 or 31.5 becomes a 32.

  • Cups

    A cup size is the difference in inches between your bust measurement and your first underband measurement. Every inch is a cup size.

    e.g. 30 inch underband / 36inch cups = +6. This is a 30E bra size.

    See our useful grid which helps you out!

  • ... it's basic maths

    Here to demystify bra sizing, it is as simple as this.

Checking the Fit

Make sure your underband is fastened on the loosest setting & straps are firmly fastened in a 'X' shape

  • Cups

    Breasts comfortably inside.

    No spilling out at side or cleavage (cup size too small). Also no to gaping fabric (your cup size too big).

  • Underband

    Fits firm + level on loosest hook.

    No to riding up your back or pulling out more than 1 inch (too big). Also no to pinching or cannot fasten (too small) … this could be your cup size. If you can do it up at the front & it fits, your cup size is too small.

  • Straps

    Can only fit two fingers under strap on top of shoulder.

    Any more, then do it up tighter!

Sister Sizing

Sister sizes are bra sizes that have the same cup volume but a different band size. This helps you get the perfect support & fit. The rules of sister sizing:

1. Go up a back size (from 32 to 34), to keep the same cup volume, go down a cup size (DD to D).

2. Go down a back size (from 34 to 32), to keep the same cup volume, go up a cup size (from D to DD).

Friendly Online Fit Checks

Still not sure on your size... once you’ve received your sports bra, you can book an online fit check with one of our experts. You can find the booking link in your post order email.