Kate Middleton has made perhaps the biggest decision of her entire wedding.  She's selected the designer who will create her gown, Breaking Celebrity News has learned.

The identity of the designer is still the most closely-guarded secret in London.  "It's Miss Middleton's intention to keep the dress a secret for her bridegroom on their wedding, as is every bride's prerogative," explained a palace spokesman.

But the commission for the dress is definitely in place with one of the city's top designers, reports People.

The betting is on Bruce Oldfield, a source tells Breaking Celebrity News.  Kate's mother and sister were recently seen at his store.  He was also a favorite of William's mother, Princess Diana.

Prince William and Kate will marry April 29.

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