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!!!
Miz Perry was also rocking a diamond and ruby syringe ring created by her BFF slash jewelry designer J Molinari and a Ferragamo clutch.
Which look do U prefer? Katy by day or night???
[Image via Pacific Coast News Online.]