Diamond Jubilee: Guess Which Two Celebs Have Worn Kate's Red McQueen Dress Before

Who: Kate Middleton

What: Wearing her beloved McQueen for the Diamond Jubilee pageant on the Thames today. The scarlet pleated dress was teamed with a matching hat, complete with a jaunty feather, and nude pumps (another K-Middy style signature).

Bonus info: Unlike her one-off Alexander McQueen wedding dress, the Duchess' red frock has been worn before - and by what must surely be two of Kate's most unlikely style companions: Kim Kardashian and Tulisa Contostavlos. Scoll down to see the evidence...

From street parties to the Thames pageant, and from Katherine Jenkins to Kate Middleton, see ALL the photos from the Diamond Jubilee weekend so far:

Flash back! See every photo of Kate and Wills' from their days at St Andrews to right now.