Size XL Underwear

XL Briefs That Fit Beautifully and Feel Even Better

If you’ve ever been told that your size means fewer choices, we’re here to tell you it’s time to stop compromising. Our XL women’s underwear come in the same flattering styles and comfortable fabrics as the rest of our range, because great knickers shouldn’t stop at a certain size.

Need help finding the right fit? Our knicker size guide is a good place to start.

Women’s Xtra Large Undies Should Support, Not Squeeze

Sick of wasting your valuable time searching for quality XL briefs in Australia? Ours are thoughtfully designed with real bodies in mind - no scratchy seams, awkward cuts, or settling for “close enough.” Just genuinely supportive, ultra-comfortable women’s underwear that works with your curves.

All our styles are available in women’s XL (though fair warning, some do sell out fast). Want all-over comfort? Try our Full Briefs. After a little shaping support? Our Cotton Control Briefs are always a favourite. Prefer a barely-there feel? Head to our XL G-Strings.

And if you’re after a full set, take a peek at our bras for the perfect match.

Why Australian Women Love Rose & Thorne XL Knickers

• Made to fit, not just scaled up. Our XL briefs are designed from the ground up for size 18–20 bodies, with cuts that support and flatter in all the right ways.

• Style without compromise. Every fabric, colour, and cut you love is available in XL too, because great underwear shouldn’t stop at a certain size.

• All-day comfort, built in. Soft, secure, and thoughtfully shaped, these are knickers that stay in place and feel good from morning to night.

• Designed to feel like you. No sagging. No squeezing. And definitely no grandma energy, just underwear that work as hard as you do.

You know what feels good. You know what works. Now you just need more of it in your drawer. We’re ready when you are.