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!!!
Is it too early to pick the best dressed woman of the White House Correspondents' Dinner?
The singer mostly tamed down her boobage, but we bet it's still going to get tongues wagging (and not just with gossip!) tonight.
KatyKat completed her knockout look with glossy, tumbling waves and a single gold ring.
[Image via Getty Images.]