You know you are shopping in Harrods when:

1) The string quartet strains you can hear drifting over the hubbub of the crowd is actually eminating from four musicians in ballgowns seated around the corner from you.
2) The solo male voice soaring to Nessun Dorma is actually standing two flights above you on the escalator.
3) The pet section sells pieces of jewellery for spoilt pets worth more than every single piece of jewellery you own combined
4) You can smell Krispy Kreme donuts being baked (and when you go to order 4 of them and they offer to sell you 12 for the price of 7 you have no resistance, even though somewhere there is a voice shouting 'no you don't need 12 donuts!) (but boy were they good)
4) When you don't have enough hands to open the door (because fantastically they are FILLED with shopping bags!) a very nice man will open it for you and wish you a good day!