And apparently it's a 'Hermes' bra, according to Rihanna's Instagram.
Ri-Ri showed her 22 million followers (for those who need a bra) not to panic if you can't find your brassiere. This is how you utilise a scarf to replace it.
And if you have the dosh handy, a snazzy Hermes scarf at that.
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All this excitement appeared to happy over 4th July weekend - celebrating American Independence Day - with small portions of food, a swimming pool, her BFF Melissa Forde...oh, and her scarf of course. Don't want to misplace that expensive accessory.
The Bitch Better Have My Money singer wrapped the scarf around her boobs and twisted it up in a bow to seal it on. No clasp needed.
She captioned the shot: "bra by @Hermes #pooltime." We don't know anyone else who could pull this off.
In other Rihanna news...
Ri-Ri released her music video for BBHMM last week and it's caused a bit of controversy.
The 27-year-old's latest video has sparked a debate about whether it is too violent, too sexist, too misogynistic and just too grim.
The seven-minute long film, which has had nearly 16 million hits in five days, shows Ri-Ri trying to claim her money back from an accountant she thinks has defrauded her.
She kidnaps his wife, graphically tortures her and almost drowns her - all in the name of revenge.
Let us know your thoughts via @heatworld Twitter and Facebook.
miu miu perfume party gallery
1 of 4Kate Moss
Mossy looked swish in her swingy sequin frock with light-as-a-feather deniers and heels. Good hair bend, too.
2 of 4Amber Heard
Johnny Depp's missus opted for a slinky black number and side 'do for tha Parisian party.
3 of 4Elizabeth Olsen
Look at those pins! Lizzy Olsen looked mega cute in her bibbed mini with sparkly peep toes.
4 of 4Maggie Gyllenhaal
We're into the sexy secretary outfit but Mags' hair was more Iron Lady Maggie than sassy Gyllenhaal.