I was hanging out in Harrods' soft furnishing department one day (not a stealth boast - wasn't buying or anything, it's just a place I like to visit every now and again, because it's so wonderfully batshit insane), and I noticed a group of women walking around with what I presume was a personal shopper / assistant.
I got a bit closer and realised they were speaking Russian (I studied it very briefly at university, so while I can't really understand, I can recognise the sound).
They were very, VERY expensively dressed, but what fascinated me was their faces - I would have estimated they were in their late 40s / early 50s, but clearly had had so much surgery done that they looked almost alien: one woman in particular had such extreme lip fillers that her mouth actually looked like a duck's bill.
I subtly followed them around for about half an hour or so, and I swear, they must have ordered close to a million pounds' worth of stuff in that time. It was a genuine 'how the other half live' experience.
None of them seemed very happy, though - they were quite shouty and there was a lot of scowling going on.
Now, I have no idea if they actually were Russian oligarchs' wives - I am making a lot of assumptions! - but I did come away that day thinking, 'well, if that's what it is to be super-wealthy, I think I'll pass'.