Her dress isn't the only major royal wedding secret. Kate Middleton created yet another frenzy when she was snapped leaving her family home on Tuesday wearing what appeared to be a swept-back updo, the look most UsMagazine.com readers chose for her nuptials. (See the latest poll results here.)
However, despite this possible "hairdo hint," a source told Us Weekly that the bride-to-be plans to wear her hair in a half-up style when she walks down the aisle on Friday.
PHOTOS: How she's gearing up for her royal life
Hair, dress and all other wedding-day speculation aside, Middleton has been the picture of calm during the past week. She was even snapped at the palace wearing jeans and schlepping a cardboard box.
For more on the Royal Wedding, including rare photos, interviews with family and friends, details on Kate's new life as a princess and a tour of their lavish homes, order a copy of Us Weekly's Will & Kate: The Royal Wedding now.