One major movie release, three stunning looks (so far).

Emma Watson kicked off her round of promo appearances for the final installment of the Harry Pottter film franchise at a London photocall on Wednesday in a short black Rafael Lopez dress with lace and ruffle detail paired with black Chanel pumps.PICTURES: Ten years of Harry Potter premieres

For the red carpet premiere in London's Trafalgar Squar, the 21-year-old actress stunned in a floor-length tiered Oscar de la Renta ball gown.PICTURES: The Harry Potter stars as kids

The star did a quick change for the after-party, showing up in a sparkly Elie Saab cocktail dress paired with matching Giuseppe Zanotti satin peep-toe platforms.

PICTURES: Emma and other stars who chopped off their hair

With the style bar already set so high, we can't wait to see what Watson will wear to the Harry Potter and the Deathly Hallows: Part II NYC premiere.

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