Katherine McNamara proved she’s not just a small-screen superhero at The Hollywood Reporter’s Nominees Night at Chateau Marmont this week. The Arrow and Shadowhunters alum commanded attention in a show-stopping black and white ensemble that had photographers working overtime and guests doing serious double-takes.
Katherine McNamara chose a daring halter crop top situation featuring romantic white ruffles that framed her décolletage with theatrical flair. The piece showed off some serious side action (we’re not complaining), while a sleek black tie detail added an unexpectedly edgy twist to the otherwise feminine silhouette. But here’s where things got really interesting: the completely open back design revealed acres of golden skin, plunging all the way down to showcase her impossibly tiny waist and sculpted physique.
Katherine McNamara’s Most Daring Red Carpet Moment Yet


McNamara has clearly been keeping up with her action-star training regimen. Her lean, dancer-like frame (likely honed from all those fight sequences in Shadowhunters and Arrow) was on full display, with toned abs and a graceful deportment that suggested years of physical discipline. This isn’t just red carpet posing. This is an athlete who happens to look incredible in couture.
The bottom half delivered equal impact with a body-hugging black midi skirt that clung to every curve. A strategic thigh-high slit added mobility and major leg-flaunting potential, while classic pointed-toe black platform heels elongated her already impressive silhouette without tipping into costume territory.
Her styling choices were refreshingly understated. McNamara kept her golden blonde locks in soft, intentional curls parted down the middle, adding a touch of approachability to an otherwise vampy ensemble. The jewelry stayed minimal with delicate rings and subtle earrings, letting the outfit’s architectural drama take center stage.


But perhaps the most memorable element? That over-the-shoulder glance. McNamara worked the camera with a confident, playful energy, one hand casually perched on her hip, lips slightly parted, eyes delivering pure smolder. The vibe screamed “I know exactly what I’m doing,” and honestly? We’re here for this level of self-assured glamour.
Having previously interviewed McNamara for Spotlight with Kat Siggers, we can confirm she’s as genuinely warm and kind as she is stunning. Her radiant smile and gracious demeanor light up any room, making moments like these feel less like calculated provocations and more like a talented actress having fun with fashion while celebrating her peers. Katherine McNamara continues proving she’s a force both on-screen and on the red carpet.
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