Given Seo’s stunning tall stature, she can rock any outfit of any colour. We can’t help but admire how elegant she looks in white, whether it's the dress she wore at the 56th Baeksang Arts Awards or the long coat in Crash Landing On You.

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A short lace dress or a long lace dress? Seo wears both. In the Downy launch event, she wore a long-sleeved black dress that stops mid-thigh. On the press conference for Black Knight, she wore a long sultry red mid-elbow dress—a definite eye-catching piece.

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If Seo can rock white, she can definitely rock black too. She wore a simple black dress for the Michael Kors Young Korea Party in Seoul with matching black pumps and clutch.

There’s no doubt that we’ve always seen Seo wear dresses that are elegant and chic but for a change, she wears leather too. Black leather jacket? Seo says no thanks and opts for a brown one instead.

In the press conference for Crash Landing On You, she also wore a strikingly long red leather dress with matching leather high-heeled boots.

For her most notable roles, Seo has always played a wealthy character so we're used to seeing her draped in luxury clothing. For her role as Sharon or Choi Seo-rin in Black Knight, a supernatural being who’s also working as a designer, Seo transforms herself into a number of notable looks: from femme fatale to high-class heiress.

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Similarly, in Black Knight, Seo also wore a number of gender-defying outfits. Since she played a supernatural being that has lived for a long time, she wore a number of clothes reminiscent of the outfits in the old era—both for women and men. A suit, tie and fedora? She owned that.

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