I Need Your Help... Birthday Dress

So... My birthday is a matter of days away (12th Sept) and the night out is on the 17th of September. That doesn't give me long to buy a gorgeous dress...

Typical that there isn't the 'perfect' dress out there at the moment! My original choice was this dress.. 

In love with fashion

Guess What... It's sold out!!

My other unrealistic choice was this dress.. 

All Saints

As beautiful as it is, it is a ridiculous price £206 and selling for near enough RRP on Ebay. At this moment though I want it so much I would probably buy it but they haven't got my size (luckily lol). God My mother would KILL me if I spent this much money on a dress!

My dresses of choice are no longer and I CANNOT find a dress I like/want. (I'm yet to look anywhere other than the internet mind, so I could be wrong!)

To make life harder for myself I have decided I MUST wear my JC lita's (taupe colour) on my birthday... I want comfort so I can crazy dance and not have to worry about my feet.. the lita's are actually pretty comfy. So I need a dress that will look good with them...  I've seen a few that I kinda like...

Never Fully Dressed @ Spoiled brat

I don't know if this would look cheap or gorgeous.. and at £74.99 I have to be 100% sure before I commit to buying! But I would love something glitzy and glamourous with LOTS of embellishment! 

motel/in love with fashion/motel

Love all these dresses BUT they are not 'perfect'! Arghhh getting so stressed!! So my plea for help; does anyone know any websites that sell similar dresses to the All Saints dress? Or any websites that I may not have heard of that sell beautiful dresses? Or have you seen a gorgeous dress somewhere that you think I may love? 

Wish me luck on search... :)