US popstar Taylor looked simply stunning as she graced the red carpet in a Monique Lhuillier gown in New York City on Monday night (11 August).
The crimson and cream colour block dress, teamed with nude suede Casadei heels, made Taylor the leading lady on the night.
The squared neckline and the pleated skirt perfectly flattered her frame and we reckon it was the perfect gown for the star-studded premiere.
In a nod to old Hollywood glamour, Taylor also sported sleek, side-swept hair. And how did she finish off her look? By rocking her signature red pout!
'I Knew You Were Trouble' singer Taylor, who has a supporting role in the sci-fi film, stars alongside Meryl Streep, Jeff Bridges and Katie Holmes.
Taylor's sophisticated outfit was a dramatic change from her pretty - but equally gorgeous - green two-piece, which she teamed with strappy yellow heels at the Teen Choice Awards on Sunday (10 August).
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Taylor Swift's style in pictures:
Copyright: Rex Features