Cabin fever is well and truly setting in for many of us, and it seems that celebrities are no exception.

Madonna has been sharing her advice and tips while she's under quarantine, and some of them have been pretty eyebrow-raising.

It's not clear whether she is in the States or in Lisbon - where she has lived for the past few years - but either way, she has been uploading what she calls 'quarantine diaries'.

The other day, she posted a bizarre video of herself dancing around her bathroom singing about 'fried fish' to the tune of 'Vogue', which led many people to understandably exclaim 'WTF, Madonna.'

Her latest dispatch has been from the bath, where she imparted words of wisdom about the virus that's sweeping the world being a 'great equaliser'.

"That’s the thing about [it]," she said. "It doesn’t care about how rich you are, how famous you are, how funny you are. How smart you are, where you live, how old you are, what amazing stories you can tell. It’s the great equaliser and what’s terrible about is it what’s great about it.

"What’s terrible about it is that it’s made us all equal in many ways and what’s wonderful about is, is that it’s made us all equal in many ways.  Like I used to say at the end of 'Human Nature' every night: if the ship goes down, we’re all going down together.’

Many fans have also been commenting on her appearance, which seems different.