But the design is so classic that it's super easy to find without resorting to dropping major cash for the Tom Ford original!
We found two equally affordable options that are super similar to Kate's dress.
Check 'em out ...AFTER THE JUMP!!!
Kate Middleton joined her hubby Prince William and brother-in-law Prince Harry at Windsor Castle on Friday for the Sovereign Monarchs Jubilee luncheon.
We were really hoping Kate would continue experimenting with different hairstyles, but it looks like we're SOL on that one.
We'll keep our fingers crossed for next time.
[Image via AP Images.]