Because I just did.
Then thought - 'oh bugger, what have I done'.
However.... Non-dress wearing DD loves it and it was really rather cheap. And I had to strike while the iron was luke-warm and buy it there and then otherwise she'd change her mind and I'd have to take her shopping, the thought of which makes me cry a bit.
Is it ever going to get here? Will it fit? Will my card details be stole and my entire life savings of 37p be filched out of my bank account?