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!!!
Though the actress certainly looked comfortable in her Armani ensem, it wasn't the polished type of look we're used to seeing from her.
The pewter satin jacket had an inneresting structure, but was slightly too bulky for the petite star's frame, while the plain black maxi skirt, was, well, too plain.
However, her purposefully messy updo was a winner!
[Image via C. Smith/WENN.]