Great quality top with a
"Great quality top with a nice thickness & material. I have purchased a few different colours now as I love them so much!"
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Billi Tank in Cobalt Blue
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Size Guide
All our sizes are listed in Australian sizing, unless you're in the US, where sizing is displayed in US sizes. You’ll find a helpful conversion chart just below to make things easier, no matter where you're shopping from.
Our sizing is generally generous, but as we work with a range of amazing creators, there can be slight differences between styles. The best way to find your fit? Compare our garment measurements with something in your wardrobe that you already love.
Still unsure? Check out the reviews below – our community often shares helpful tips on fit!
And if you need a hand, our friendly customer care team is just a tap away via live chat.
Size Guide
* All measurements are guides only. Each item may vary 1-2cm from the listed measurement.
| Size | 1/2 Bust | 1/2 Waist | 1/2 Hem | Length |
| 6 | 33cm | 31.5cm | 38.5cm | 60cm |
| 8 | 35.5cm | 34cm | 41cm | 60.5cm |
| 10 | 38cm | 36.5cm | 43.5cm | 61cm |
| 12 | 40.5cm | 39cm | 46cm | 62cm |
| 14 | 43cm | 41.5cm | 48.5cm | 62.5cm |
| 16 | 45.5cm | 44cm | 51cm | 63cm |
| 18 | 48cm | 46.5cm | 53.5cm | 64cm |
| 20 | 51cm | 49.5cm | 56.5cm | 65cm |
| 22 | 54cm | 52.5cm | 59.5cm | 66cm |
| 24 | 57cm | 55.5cm | 62.5cm | 67cm |
| 26 | 60cm | 58.5cm | 65.5cm | 68cm |
| 28 | 63cm | 61.5cm | 68.5cm | 69cm |
| 30 | 66cm | 64.5cm | 71.5cm | 70cm |
Sizing Conversions:
| AU /NZ /UK | USA | Europe |
| 6 | 2 | 34 |
| 8 | 4 | 36 |
| 10 | 6 | 38 |
| 12 | 8 | 40 |
| 14 | 10 | 42 |
| 16 | 12 | 44 |
| 18 | 14 | 46 |
| 20 | 16 | 48 |
| 22 | 18 | 50 |
| 24 | 20 | 52 |
| 26 | 22 | 54 |
| 28 | 24 | 56 |
| 30 | 26 | 58 |
* All measurements are guides only. Each item may vary 1-2in from the listed measurement.
| Size | 1/2 Bust | 1/2 Waist | 1/2 Hem | Length |
| 6 | 13in | 12.5in | 15in | 24in |
| 8 | 14in | 13.5in | 16in | 24in |
| 10 | 15in | 14.5in | 17in | 24in |
| 12 | 16in | 15.5in | 18in | 24.5in |
| 14 | 17in | 16in | 19in | 25in |
| 16 | 18in | 17in | 20in | 25in |
| 18 | 19in | 18in | 21in | 25in |
| 20 | 20in | 19.5in | 22in | 26in |
| 22 | 21in | 21in | 23.5in | 26in |
| 24 | 22.5in | 22in | 25in | 26.5in |
| 26 | 24in | 23in | 26in | 27in |
| 28 | 25in | 24in | 27in | 27in |
| 30 | 26in | 25.5in | 28in | 28in |
Sizing Conversions:
| AU /NZ /UK | USA | Europe |
| 6 | 2 | 34 |
| 8 | 4 | 36 |
| 10 | 6 | 38 |
| 12 | 8 | 40 |
| 14 | 10 | 42 |
| 16 | 12 | 44 |
| 18 | 14 | 46 |
| 20 | 16 | 48 |
| 22 | 18 | 50 |
| 24 | 20 | 52 |
| 26 | 22 | 54 |
| 28 | 24 | 56 |
| 30 | 26 | 58 |
Our models wear...
Alisha wears 12
167 cm tall
94 cm bust
Overall rating: 4.93617 / 5 from 329 reviews.
AI Generated Review Summary
The Billi Tank in Cobalt Blue is praised for its soft, ultra-stretchy fabric and ribbed detailing, offering ultimate comfort and versatility. Customers appreciate its true-to-size fit, vibrant colors, and the perfect balance of style and functionality.
Summary topics
- Stretch (5%): Customers expressed appreciation for the great fit, soft material, and beautiful bright colors of the product.
- Material (7%): Customers loved the material, describing it as soft, beautiful, and of great quality.
- Tank (43%): A substantial number of customers stated that the tank is great, perfect, awesome, and versatile.
- Colours (39%): Many customers loved the colours of the product, describing them as vibrant, beautiful, and perfect.
- Fit (24%): A significant number of customers raved about the fit, describing it as perfect, fabulous, and comfortable.
Review topics: ["size","fit","length","colours","fabric","material","looks","problem","stretch","style","feel","addition","quality","shape","straps","tank","neckline","coverage","thickness","singlet","width","top","staple","piece","poppy","blue","tops","wear","v neck","products"].
Review highlights
- "Its super comfortable and a decent length, feels light on and the colour is stunning!" —
- "This tank is great, lovely colour, nice fabric and fits well." —
- "Love the Billi Tanks, beautifully soft, great length and fit." —
Reviews
You just cannot go wrong with a Billi Tank!
"Proud Poppy's service is second to none! No question is too much of a challenge! This winter it's ALL about chocolate brown and light blue, and this Billi Tank is the perfect item to be worn with any combo of the blue/brown range! It's comfortable to wear, it doesn't ride up and the fabric feels amazing!"
Soft, stretchy, cute colours - recommend 100%
"This tank wont let you down, feels so stretchy and soft, colour is unique - not many tanks available in this cute denim-y blue. Sits beautifully everywhere and length is perfect at 171cm tall."
Ticks all the boxes
"Great fit with the perfect length for a shorty like me Fabric is soft and comfy and it’s so good to get a great range of colours 👍👍👍"
A full dozen
"I am not saying I have 12 different colour ways of these but I am! They just go with everything - under a Tammin shirt, paired with a Carrie skirt or take you pick with the Larsa or Gina pant. Your options are endless. These are true to size. I am 174cm tall with an apron belly normally in a size 20."
Why did I wait so long
"So I’ve seen people post about the Billi Tanks and the team rave about them but honestly, in my head - it’s a tank top…. How can that be that amazing! Well, in the sales I grabbed one (because why not) and well aren’t I mad I didn’t grab more! It’s the darn comfiest tank I’ve ever put on my body and now I understand why people have raved about them! Do yourself a favour and get one… get them ALL!"
"Great top and colour! Great fit too"
The straps, shape and feel
"The straps, shape and feel of the Billi tank is so good! It’s so hard to find a good staple tank, and this hits the mark."
Billi Tank in lemon
"Love it! Such a comfortable tank, wish I had bought it sooner"
The Billi tanks are so
"The Billi tanks are so stretchy and comfortable - love them for work and also have some as sleep singlets for warmer nights 💕"
