Little girls dream of the day their prince will come sweep them off their feet. They imagine having a beautiful white wedding with the man of the dreams -- and some young women even spend hours fantasizing about what kind of dress they'll wear. Ashlee Simpson said she was never that type of girl, until she got engaged to Pete Wentz.

After he popped the question, nuptials were on her mind and she went a little crazy with the planning, "It kind of went more fairytale than I thought. I got "really into it."

And the dress in itself was a total fairytale! Monique Lhuillier is known for designing lavish wedding gowns and she outdid herself with Ashlee's custom ivory lace gown, complete with a cathedral length veil. You can see a photo of Ashlee in her wedding dress on the Monique Lhuillier website. Just click on press, and then celebrities and Ashlee is the first thing that pops up.

The bride also wore Monique Lhuillier for the reception. She changed into a black tulle gown and a rock crystal necklace straight from the Fall '08 collection.