Posie Multi Fit Frill One Piece
Regular price$249
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- Free shipping in Australia
- Carbon neutral delivery in sustainable packaging
- This product is eligible for easy online returns
- In stock, ready to ship from our Sydney HQ
- More stock is on the way

The Posie Multi Fit Frill One Piece is our best-selling feminine bonded frill one piece it's multi-fit and suitable for different bust sizes.
- Multi Fit styling will fit up to a D Cup
- Bonded frill neck and shoulders
- Signature embroidery trim in front panel seams
- Soft optional removable cups
- Adjustable straps
- Regular leg height and classic bottom coverage
- Our Exclusive GRS Certified Recycled Nylon fabric that feels buttery soft
- Fully lined in our GRS Certified Recycled Body Sculpting silky touch lining
- Our studio model Emma is wearing size 12 one piece, she is 180cm tall, has a 94cm bust / DD cup, 98cm Hips and a 74cm waist.
At Monte & Lou we have used our extensive experience to create swimsuits that fit and flatter everyone. Our chart below allows you to identify your size more easily.
Size (cm) | 8 | 10 | 12 | 14 | 16 |
Bust | 81-83 | 86-88 | 91-93 | 96-98 | 101-103 |
Underbust | 66-68 | 71-73 | 76-78 | 81-83 | 86-88 |
Waist | 61-63 | 66-68 | 71-73 | 76-78 | 81-83 |
Hip | 91-93 | 96-98 | 101-103 | 106-108 | 111-113 |
Cup Sizing | |||||
A Cup | 78-80 | 83-85 | 88-90 | 93-95 | 98-100 |
B/C Cup | 81-83 | 86-88 | 91-93 | 96-98 | 101-103 |
D Cup | 84-86 | 89-91 | 94-96 | 99-101 | 104-106 |
DD/E Cup | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 |
F Cup | 90-92 | 95-97 | 100-102 | 105-107 | 110-112 |
If you have a specific sizing question, please message us and we would be happy to help.
Exclusive Main Fabric: 85% Recycled Nylon, 15% Elastane
Exclusive Lining Fabric: 85% Recycled Nylon, 15% Elastane
To ensure correct care, please refer to the individual instructions on each product. Rinse your swimwear after use. Cold gentle machine wash separately or hand wash with lukewarm water using mild detergent. Dry in shade.
We offer free delivery in Australia for all orders.
For international orders outside of Australia, please see our shipping page for current rates.
Although we hope you love all your items from Monte & Lou, we have an easy online returns process if you are not 100% happy with your purchase.
All items purchased in-store must be returned to our Monte & Lou Flagship store in Avalon Beach for a store credit.
If you purchased a Monte & Lou item from one of our many stockists we suggest you contact the stockist's customer service team to assist with a return request.
Fit, Function and Innovation.
Monte & Lou offers you Sustainable Luxury with exclusive quick dry technology in 100% Recycled Nylon yarn for both our main and lining. Made from post-consumer materials such as plastic bottles, fishing nets and carpet fibres our stunning bespoke fabrics are luxurious to the touch and our quick dry technology means your swim will be touch dry within 15 minutes – no more sitting in a damp swimsuit.
All our garments are fully lined in silky touch body sculpting lining. The combination of our two fabrications along with a generous elastane content gives each Monte & Lou swimsuit superior supportive qualities.
Don’t just take our word for it, try it for yourself!