For my birthday, as a gift my brother very generously said I could buy whatever I wanted and he would pay. My limit was £1000. Isn't he just the best brother ever?!

My birthday was over a month ago now so I have put a lot of thought into what I wanted to get.

I have always wanted to buy a posh bag but have never been able to afford it. I went up to Leeds for the weekend and that was my opportunity to search out the perfect bag.

I fell in love with a 'raspberry' Mulberry bag. It's bright, shiny and the complete opposite of any other bag I own. A complete impulse buy. A very expensive impulse buy.

Now I feel guilty. I haven't really used it yet - which I thought I would. I think this is a symptom of my guilt.

I spoke to my mum last night and was talking about my bag. She said my brother had told her the price and she was going to buy me a glass case to put it in. I then asked her if she thought it was too extravagant. She replied "Well if it's what you want".

Her tone made it clear that she thought I had taken advantage of my brother's generousity and used his money frivolously.

I now feel even more guilty. I am on the verge of taking the bag back.

I am torn. On the one hand, I do love the bag but on the other hand I now hate myself for buying it.