The Gossip Girl star stepped out at the premiere for new drama flick The Judge in Los Angeles, in which she stars alongside Robert Downey Jr. and Billy Bob Thornton.
And while her Gossip Girl character Blair Waldorf likes to wear brightly coloured florals and girly headbands, Leighton opted for a sophisticated monochrome vibe for the occasion.
The starlet flaunted her fashion credentials in a chic dress by Balmain, which featured a textured top complete with souped-up shoulder pads and figure-flattering black panels.
Her fancy frock also boasted a gorgeous satin layered skirt with a thigh-skimming hem, which left her supermodel-worthy pins on full display.
To accessorise, Leighton - who is married to The O.C. actor Adam Brody - added a pair of black lace heels while toting a boxy black and gold clutch bag, styling her brunette locks in a sleek and smooth 'do.
And she showcased her natural beauty by keeping her make-up low-key, dusting a subtle touch of smoky brown eyeshadow on her lids teamed with lashings of mascara, all topped off with a dab of caramel brown lipstick.
Loving the look Leighton, and we reckon Blair would approve too!
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