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!!!
It's hard to believe Jessica Alba gave birth a little over 2 months ago.
The mother of two showed off her shrinking post-baby bod last night at An Evening with Ralph Lauren in a strapless velvet dress from Ralph Lauren's fall collection.
Jessica completed her look with vintage Ralph Lauren jewels and a red clutch.
[Image via Ivan Nikolov/WENN.]