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!!!
The beautiful 31-year-old was retro mod in her checkered Louis Vuitton long-sleeved dress that hit right below the knee.
Black pumps and clutch were the chic finishing touches.
Props to her stylist Brad Goreski for helping her pick out two perfect outfits in one night!
[Image via Daniel Tanner/WENN.]