So looking at new duvet covers online which made me ponder...
My bed is just mattress, mattress cover, fitted white sheet, duvet with cover and 2 x pillows with covers (double bed).
Is yours the same?
In the pictures I quite often see 2 or 3 sets of pillows eg one with the standard pillow case and also one with the edging around it (Oxford?), sometimes a plain white pair as well and a bedspread and/or cushions on the bed.
Now part of me thinks that it's just marketing to sell more of the product range and part of me thinks hmm, that looks quite nice and maybe that's how everyone else does it..