Size XXXL Underwear

With coverage that doesn’t quit, our size XXXL knickers are designed for bodies that need a little more room, without sacrificing style, shape, or comfort.

Free delivery

on any domestic order $125 and above.

30 Day Returns

Available on most bra products, see our returns policy for more info.

Extra Special XXXL Knickers

These aren’t your bottom-of-the-drawer briefs. These are your favourite pairs - the ones that remind you you’ve still got it. With soft stretch, smoothing seams, and well-considered design in every cut, our XXXL briefs give you the kind of fit that feels as good as it looks. Because your underwear drawer should meet your standards, not lower them. Need to double-check your size? Our knicker size guide has all the info.

XXXL Undies That Go Beyond Comfort or Control

Plus-size briefs often fall into two camps: baggy and boring, or so tight you’re counting down to take them off. Ours bring the balance back into your life. Cotton control when you want hold, full briefs when you want something cosy, or prints if you’re done with beige. With Rose & Thorne, you’ll find a whole range of styles that don’t apologise for your size, or your standards.

The Benefits of Our XXXL Underwear

Made to fit - not stretched to fit. Designed specifically for sizes 24–26, our XXXL knickers move with you and hold their shape beautifully.
Not just beige. Choose from bold prints, rich colours, and everyday favourites - because curves should come with options.
Comfort that works. No digging, no rolling, no disappearing acts - just undies that stay put and feel good all day long.
Confidence you can wear. These are the kind of underwear you’ll want to show off, because they make you look as good as you feel.

You know what feels good. You know what works. Now you just need more of it in your drawer. Ready when you are.