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!!!
Kate Hudson enjoyed her last night as a 33 year old is the fanciest of ways on Thursday at the Tiffany & Co. Blue Book Ball in New York City.
The almost birthday girl looked like a silver screen siren in a Tiffany blue Reem Acra Resort gown complete with a seksi thigh-high slit.
All we can say is: stunning!!! When Kate gets it right, she really gets it right!
Tiffany & Co. jewels, nude heels and beautiful golden side-swept curls completed her glamorous look.
[Image via Retna LTD.]