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!!!
Gala night with the baby bump!
Both of the preternaturally gorgeous rock stars wore Salvatore Ferragamo (who also happened to host the event) for the occasion, with Gwen looking especially festive in a fully fringed silver halter gown.
Even with all that sparkly fringe to distract us, we could still make out Gwen's adorable baby bump!
In fact, the No Doubt singer looked particularly happy, swinging her body to make the fringe fly and smiling wide for photographers, and we bet the new baby had something to do with it!
We're so thrilled for you, Gwen!
[Image via Apega/WENN.]