These charts are a guide, we also recommend you take our fit quiz here.
Please measure with a bra on. When measuring, you need to measure quite tight for your underbust measurement, and then over the bust, you measure loosely. Otherwise your result will be incorrect. Any questions, we're here to help.
Bra Size Chart
My Necessity Bra Size Guides
Use the following size guides to fit our My Necessity Bra which is available in both regular cup and full cup sizes.
Sister sizing allows you to find your perfect fit. Sometimes after measuring yourself it is possible that your size may still need to be adjusted.
The following chart shows sister sizing for each bra size. All of the sister cups in the same row are the same size.
Sister sizing is like a seesaw. If you move up in the band, move down in the cup and vice versa. For example if you find that a size 12E fits well in the cup, but is too big around the band, go down to the next sister size in the row and try a 10F.
HM Collectives Fitting Quiz will help you find the right size. Our fitting Video is another great way to make sure you have the correct fit. Still unsure? Please email your measurements and details of how many months pregnant/feeding, we will be happy to help.
Free shipping applies to all orders throughout Australia over $50!!
All discount codes are valid for full price items only. From time to time we have fabulous sales or promotions, the use of further discount codes are exempt. Your discount code will work again once the sale is over.
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Standard Australia Post Tracked 5 - 7 business days no signature required (PO Boxes and Parcel Lockers on this service) OR 2-4 business days with DHL Express Courier (Recommended).
Please allow 24hrs for orders to be processed by the HM Collective team ready for transport with your selected shipping option.
Note WA and NT may extend delivery times by 1-2 working days. Peak times such as Black Friday/Cyber Monday and Boxing Day sales may experience a slightly delay in delivery times.
COVID is currently causing delays in some regions. You can check the order status by logging into your Account.
There are no duties on deliveries within Australia. Outside of Australia customs duties and charges may vary. Outside Australia HM Collective is not responsible for any charges the recipient may incur.
All bras and sleepwear are returnable* for store credit or exchange within 90 days to ensure you get the right fit. Refunds are within 14 days. *Please see our dedicated Returns and Exchanges page for full details
Return shipping is not refundable, however you will not be charged shipping for the exchange items to be sent to you.
We aim to process your exchange and store credits within 48hrs of receiving it at our collections warehouse. You will be contacted by email to let you know this has happened. Your store credit will be emailed or exchanged items will be sent out on the next available courier. Refunds will be processed once they have been forwarded back to us here in NZ, allow 7-10 days. Peak holiday times may experience a slightly delay in processing times.
We have a generous 3 month policy for finding any faults, after this time frame it's considered fair wear and tear. Please email details and photos within 3 months to support@hmcollective.com
HM Collective gift vouchers and store credits normally expiry one year from date of purchase/issue.
If you have technical issues or find any errors on our website please contact support@hmcollective.com with details of the error and we can fix it.
My Necessity REGULAR is designed for the smaller bust from an A to an E cup. If you are bigger than an E cup, purchase our FULL CUP style. S-XXL sizing is most similar to your clothing sizing. S = size 10, XXL = size 18.
is a luxurious multi-fit seamless bra with removable foam cups and a side sling support. The perfect style for your hospital bag, for sleeping in and light exercise.
This is a soft support style with no seams for the ultimate in comfort, and a flexible fit that will expand 2-3 cup sizes to offer total comfort and flexibility for your changing size throughout your pregnancy and for postpartum changes.
Our model is wearing a size L Regular (she wears a 14D bra and size 14 clothing).
FEATURES - easy dual cup fitting - side sling feeding support - wirefree cup support - removable cups - one-handed opening nursing clips - 6 hook and eye fastenings for extending band size - black colour - outer & lining 92% polyamide 8% elastane - S/10-12, M/12-14, L/14-16, XL/16-18, XXL/18-20 - multi-fit A-E cup
Super comfortable and I can tell it will adjust to size when I'm breastfeeding.
Kylie C.
So comfortable. I’ve barely taken this off since it arrived...including often wearing it for sleeping.
It supports but doesn’t constrict the breasts (which is important for breast feeding) and has a thick band under the bust that prevents it digging in. Very comfortable!
