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 pretty sure it's impossible for black to go out of style, which is good news for the Olsen Twins!
On Wednesday, Mary-Kate and Ashley stuck to their favorite dark color palette for the launch of their Bik Bok collection in Oslo, Norway.
Looking casual and chic, the 27-year-old millionaires spent the day meeting fans to promote their collaboration with the Scandinavian brand. You know, because they clearly need the money! LOLz!
We're loving the pop of pink from Ashley’s shoes! Such an improvement from those mandals!
[Image via FameFlynet Pictures.]