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!!!
We're loving Dianna Agron's style choices in the last 24 hours!
After making a stunning appearance at ABC Studios, the actress pulled off yet another fabulous ensem last night at The Family premiere in New York City.
The 27-year-old Georgia peach flashed some skin in a white Osman crop top paired with a pleated black skirt and clear striped Christian Louboutin pumps.
Dianna accessorized with Fred Leighton jewels, and showed off her chandelier earrings beautifully by pulling her wavy blonde locks back.
[Image via Molly McClain/WENN.]