Size guide
Our size guide is based on the body measurements below and should be used as a guide only.
cm
inch
SIZE | AUS | US | UK | BUST | WAIST | HIP |
XXS | 4 | 0 | 4 | 79 - 81 | 60 - 63 | 84 - 86 |
XS | 6 | 2 | 6 | 81 - 83 | 63 - 65 | 86 - 88 |
S | 8 | 4 | 8 | 86 - 88 | 70 - 72 | 93 - 95 |
M | 10 | 6 | 10 | 90 - 92 | 73 - 75 | 98 - 100 |
L | 12 | 8 | 12 | 96 - 98 | 76 - 79 | 100 - 105 |
XL | 14 | 10 | 14 | 101 - 103 | 80 - 85 | 108 - 111 |
XXL | 16 | 12 | 16 | 107 - 109 | 87 - 92 | 115 - 118 |
3XL | 18 | 14 | 18 | 118 - 124 | 94 - 98 | 125 - 130 |
4XL | 20 | 16 | 20 | 125 - 130 | 101 - 105 | 134 - 138 |
5XL | 22 | 18 | 22 | 134 - 138 | 110 - 115 | 140 - 145 |
SIZE | AUS | US | UK | BUST | WAIST | HIP |
XXS | 4 | 0 | 4 | 31 - 32 | 23.5 - 25 | 33 - 34 |
XS | 6 | 2 | 6 | 32 - 32.5 | 25 - 26 | 34 - 35 |
S | 8 | 4 | 8 | 34 - 35 | 27 - 28 | 36 - 37 |
M | 10 | 6 | 10 | 35 - 36 | 28.5 - 29.5 | 38.5 - 39 |
L | 12 | 8 | 12 | 37.5 - 38.5 | 30 - 31 | 39 - 41 |
XL | 14 | 10 | 14 | 39.5 - 40.5 | 31 - 33.5 | 42.5 - 44 |
XXL | 16 | 12 | 16 | 42 - 43 | 34 - 36 | 45 - 46 |
3XL | 18 | 14 | 18 | 46 - 49 | 37 - 38.5 | 49 - 51 |
4XL | 20 | 16 | 20 | 49 - 51 | 39 - 41 | 52.5 - 54 |
5XL | 22 | 18 | 22 | 52.5 - 54 | 43 - 46 | 55 - 57 |
*please allow 1- 2 cm tolerance with measurements
If you would like further assistance with sizing, our customer service team are more than happy to help! Please contact us here






Go Lo - Low Back Bra Converter - Black
or 4 payments of $3.00 with
DETAILS +
The Low Back Bra Converter instantly converts any back-closure bra, perfect for use underneath low-back tops and dresses. The adjustable Low Back Bra Strap Extender connects to your bra strap’s hook-and-eye, and wraps around the front to create a low-back design.
The Low Back converter caters for all shapes and sizes given the length of our adjustable strap.
Our Low Back Bra Extender has a total adjustable bra strap length of 99.0cm.
INSTRUCTIONS +
To use:
1. Connect the Low Back Converter to your bra’s back closure straps
2. Bring the Low Back Converter Straps around to your front and fasten
3. Adjust the Low Back Converter by using the slide adjustment for comfort
One hook-and-eye making it suitable for 1, 2 or 3 hook closure bras.
Care: Hand wash & line dry
Returns +
For all information regarding our returns policy, please visit -www.billyj.com.au/pages/returns
Delivery +
Australian Orders - (typically the next business day, remote 2-3 business days)
Free Express Delivery within Australia for all orders over $150.
Flat rate express shipping $12 for orders under $150.
International Orders
Billy J delivers internationally. For more info on delivery locations click here.
Please note: Express Shipping timeframes do not take into account the packing time at our warehouse.