Not Sequins, Not Floral—The Elegant Party Dress Margot Robbie and Rosie HW Swear By

In my experience, the party-peppered months of November and December can be some of the trickiest to shop for—especially if you consider yourself a timeless dresser. With micro-trends dominating the landscape each year, it becomes all too easy to distinguish one festive wardrobe from the next. Prints shift, embellishments evolve, and suddenly last year’s “it” dress feels oddly timestamped. As someone who prioritises pieces that will stand the test of time, I often find myself stuck in a seasonal style stalemate.

That’s why I was so inspired when I came across a shot of Margot Robbie this week wearing the timeless party-ready dress trend I know will hold up for years to come. Echoing the cool tailoring trend that continues to endure, blazer dresses return every festive season without fail. In particular, the Wardrobe.NYC x Rosie Huntington-Whiteley black blazer dress has reemerged as a favourite among fashion people once again.

Taking hers out for a spin just this week, I spotted Margot styling the collarless blazer dress with tall black leather heels and a black Chanel Flap Bag. With its clean lines and tailored structure, the black minidress takes its cues from classic tailoring, exuding a naturally polished energy that does the styling work for you. As Margot demonstrated, minimal accessories and a monochromatic palette only elevate its refined appeal.

Designed as part of her ongoing collaboration with Wardrobe.NYC, naturally, Rosie has sported the timeless dress on a number of evening occasions, too. True to her luxurious aesthetic, she often leans into sleek, tonal styling—her leather blazer and black fishnet tights offering one of the chicest interpretations of the trend I’ve seen.

And it isn’t just celebrities taking note. I recently spotted influencer @nlmarilyn layering hers over a black column skirt and finishing with a structured hat, whilst others have kept things classic, opting for sheer black tights and pointed-toe heels for an elegant and refined finish.

While the Wardrobe.NYC version is having a moment; the high street and designer offerings are just as compelling this season. From H&M and Mango’s neatly tailored takes to Valentino’s sculptural, evening-ready iteration, the blazer dress is firmly cemented as one of the season’s most sophisticated party-season staples.