From Nature to Nurture
The story behind Billie Green – and why your child’s first bra shouldn’t come wrapped in plastic.
While navigating my own secondary fertility journey, I became hyper-aware of the everyday chemicals and plastics I was putting on - and into - my body. I started looking closely at the activewear I lived in: Lorna Jane, Bonds, Rebel, Lululemon. So much of it was made from polyester, nylon, and other synthetic fibres derived from petrochemicals. And it wasn’t just gym clothes - it was underwear, too.
That realisation sent me down a rabbit hole. I started investigating what my kids were wearing. To my shock, almost every piece of underwear, every singlet, every sock - they were all made from plastic-based fabrics.
“It’s more durable.” But at what cost?
Polyester is often used in underwear, bras and clothing for two reasons: It's both durable and very cheap. But that durability comes at a human and environmental cost.
💬 “Plastic particles are now being found in human blood, lungs, and even placentas.”
— The Minderoo Foundation, 2023
These fabrics don’t break down the way natural fibres do. Instead, they shed microplastics with every wash and wear. These tiny particles enter our waterways, our food systems, and ultimately our bodies—where they don’t degrade, but accumulate.
According to the Minderoo Foundation, plastic pollution has become a health crisis. Their Plastic Health Map documents how micro and nanoplastics can leach toxic additives and cause inflammation, disrupt hormones, and accumulate in organs.¹
And for what? How long do we really need our socks and undies to last?
Clothes that grow with you—not on you
So I created Billie Green. A sustainable underwear brand made for tweens and teens entering the world of bras, periods, and body changes—with soft, breathable fabrics that don’t come with baggage.
Our designs are:
✅ Made from Lenzing™ TENCEL™ Lyocell, modal and organic cotton
✅ Free from padding, polyester and nylon.
✅ Certified to OEKO-TEX® 100 standards
✅ Adjustable and designed to grow with young bodies
A new kind of first layer
We believe the first bra you wear should be:
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Comfortable (not restrictive or itchy)
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Simple (no wires, padding or fastenings)
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Safe (free from toxins and plastics)
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Sustainable (good for people and the planet)
Because growing up is enough of a journey. Your first layers shouldn’t be part of the problem.
From nature to nurture
Billie Green exists to protect what matters: our kids and our planet. We’re raising the bar for underwear. Nature-based fibres with the performance and silky soft feel that young people crave. And the best part? These fabrics don't need a lot of washing like synthetics do. So you can wash and buy less!
Ready to feel the difference?
👉 Explore our plastic-free first bras and underwear →
Sources:
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Minderoo Foundation Plastic Health Map – www.minderoo.org/plastic-health-map/
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Vrije Universiteit Amsterdam (2022): Microplastics found in human blood
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University of Newcastle (2019): Average person may ingest 5 grams of plastic per week – that’s a credit card’s worth
Looking Forward
Our journey doesn’t stop here. We’re constantly exploring:
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Lower-impact dyes and fabrics and strap options
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Circular fashion solutions
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Deeper community connections
We’re not perfect—but we’re evolving every day, and we want to hear from our customers and use your feedback to guide us forward. Please join us by subscribing to our email.
