On such a big night for Emma Watson at the “Harry Potter And The Deathly Hallows Part 2″ World Premiere, she topped it off perfectly with some Elie Saab magic.

The actress did a swift quick change for the after-party into an Elie Saab Spring 2011 Couture mini dress.

Her stone toned fully embroidered, boat neck cocktail dress with grosgrain belt was paired with matching Giuseppe Zanotti satin double platform peep-toes.

Let’s hope she has more where this came from, as the New York Premiere is in 4 days.

Both of her looks tonight are BDOTW worthy.

So who would you pick?

Oscar or Elie?

Chopard earrings completed her look.

Credit: Style.com & Getty