I've got a £300 selfridges voucher to spend and want to treat myself. What would be a good treat? I'm size 16, so doesn't feel like any of the clothes would fit. The bags all seem to be above budget. I'm up for some beauty purchases for my 50 year old skin, but not sure what to buy. Sunglasses would have been my go to earlier for a treat purchase, but need prescription ones now. Getting older makes treating yourself more complicated! Any hidden selfridges gems?