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All our sizes are listed in Australian sizing – and 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.
* 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 |
| 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 |
| 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 |
Tess wears 16
178 cm tall
105 cm bust
91 cm waist
128 cm hip
Overall rating: 4.9302325 / 5 from 301 reviews.
The Billi Tank in Navy is praised for its stunning cobalt blue color, perfect fit, and high-quality, stretchy fabric. Customers appreciate its comfort, versatility, and true-to-size sizing.
Review topics: ["size","fit","length","colours","straps","fabric","quality","problem","material","looks","feel","addition","shape","stretch","neckline","piece","coverage","neck","style","price","thickness","width","tank","singlet","top","staple","tops","blue","products","pink"].
"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!"
"Great summer tank top. Soft stretchy fabric. No clear front/back. Unsure how this will impact larger busted females"
"Pure comfort and the ideal extra layer to deal with the unpredictable four seasons in one day. Washes well and no running colours - perfect to pack and no ironing required."
"These singlets are a must have staple in your wardrobe. The fabric is just divine and ever so comfortable. I have lost count of how many colours I have. I do size up 1 size for length, as I like my singlets a little longer. However they are true to size."
"I love the Billi tank , this is the 5th colour that I have purchased. The style is perfect to go under so many of PP shirts and can be worn by itself as the straps cover up my bra straps. The length is perfect for tucking in or keeping out. The red colour is great and a perfect red."
"Love the colour, it matches perfectly with my Blue Lani Gina pants and matching shirt. The fabric is amazing with lots of stretch. I'll definitely be ordering it in more colours."
"Denim Blue is the latest addition to my Billi Tank obsession. I confess to always going up by a couple of sizes in this style, to avoid the rib fabric clinging to the midriff. The round neckline and length are perfect for wearing under all my shirts. . . and the quality fabric never needs an iron."
"Love my Billi Tank. Nice to wear under jacket in winter."
"I've got a great selection of Billi tanks now. . . and the ecru colorway teams with so many prints. I'm a 'singlet under open shirt' girl. . . and the Billi always feel lovely. So happy that these are being offered in a combo now. . . bargain!"
"Love Love Love , going to get a lot of repeat wear this one !! Great Colour. Great Feel."
