More info on the dress Sophie (Amanda Seyfried) wears in Mamma Mia! the movie? please =)?

I would like to find a decent picture,or information on the wedding dress worn by Sophie in the movie...its gorgeous and I would love to re-make it for my own wedding! I cant find any designer information,or even a description of it. any links or relevant information would be greatly appreciated! =) thankyou in advance