Now that we're officially into December, it's time to start thinking about your Christmas party outfit! Which, for most of us, likely means a party dress. A fail-safe for the festive season, there are plenty of party dress trends to turn to this winter from classic LBDs to sheer fabrications. However, our favourite is undoubtedly sequins.

There's no denying sequins' close association with party season, a notion backed by the autumn/winter 2025 runways as seen at Ashish, Erdem, Etro, Tory Burch, Michael Kors, Mithridate and more. Similarly, The Fashion Awards 2025 presented by Pandora held last night [Monday 1 December] in London proved sequin styles come celebrity-approved, with sparkly gowns, alongside see-through dresses, both standout trends on the red carpet.

Of course, you don't have to limit yourself to repping just one trend. This Mango sequin dress with open back ticks off an impressive four (!!) – all in one look.

mango burgundy sequin dresspinterest
Mango

Embellished entirely from neck to hem, this number is pulling no punches when it comes to seasonal sparkle. Prepare to rival the glitter ball! However, unlike metallic-hued sequin designs that can sometimes feel ostentatious in their obvious shimmer and shine, this Mango dress takes a more subtle and muted approach in a deep burgundy hue – trend number two, as the shade is unquestionably the colour of the season.

Mango Sequin dress with open back

Sequin dress with open back
Credit: Mango

The third trend taps into the fabrication beneath the sequin adornments, as this dress is actually crafted from velvet. Yep, it doesn't get more Christmassy than sequins *and* velvet. As for the fourth and final trend, this dress features an open back with two tie details that perfectly tap into the bow trend.

mango burgundy sequin dresspinterest
Mango

Add black tights, heels, a clutch bag and maybe some jazzy earrings to really lean into party season, and we guarantee you'll be the best dressed guest at every festive event on your social calendar. Is this the ultimate party dress? We think so.

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Headshot of Alexandria Dale
Alexandria Dale
Digital Fashion Writer

Alexandria Dale is the Digital Fashion Writer at Cosmopolitan UK. Covering everything from the celebrity style moments worth knowing about to the latest fashion news, there’s nothing she loves more than finding a high street dupe of a must-have designer item. As well as discovering new brands, she’s passionate about sustainable fashion and establishing the trends that are actually worth investing in. Having worked in fashion journalism for six years, she has experience at both digital and print publications including Glamour and Ok!