By BIANCA SOLDANI

It was a glamorous black tie event.

While a number of celebrity attendees dazzled in sparkling and glamorous outfits, Cate Blanchett chose a more refined look as she arrived at Windsor Castle for a charity dinner on Tuesday, hosted by the Duke of Cambridge.

Mingling with celebrities such as Cara Delevingne, Kate Moss, and Emma Watson, along with fellow Australian Margot Robbie, the modestly styled Blue Jasmine actress, 44, made a significant impression in an ethereal, powdery white gown.

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Dazzling: Cate Blanchett captivated in a sleek, powder white form-fitting gown while socializing with a host of high-profile guests at a charity gala dinner hosted by Prince William at Windsor Castle on Tuesday.

Clinging to her willowy figure, the floor-length frock featured a dramatic one shoulder detail with layers of delicate fabric draped over her bust and shoulder to break up the simplicity of the dress.

Leaving her collar unadorned, the mother-of-three added sparkle to her elegant ensemble with a pair of chandelier style crystal earrings and clutched a slimline cream purse.

Prince William threw open the doors of the castle for the event, hosted to celebrate the work of The Royal Marsden Hospital of which he is president.

But while a host of celebrities including Sherlock’s Benedict Cumberbatch, actress Helena Bonham Carter, photographer Mario Testino and Downton Abbey’s Laura Carmichael were in attendance, the Duchess of Cambridge was notably absent.

Glittering: The Blue Jasmine actress, 44, added sparkle to her elegant ensemble with a pair of chandelier style crystal earrings – the event was held to celebrate the work of the Royal Marsden Hospital

Perfectly coiffed: The beauty tied her blonde tresses into a low chignon with a severe side part

Seated next to celebrated designer Ralph Lauren, who was a sponsor of the glittering event, Cate enjoyed a lavish dinner as the A-list guests took their places at two long rows of tables.

Her blonde tresses were tied into a low chignon with a severe side part and she kept her makeup look elegant with a slick of black eye liner and lashings of pearly pink lip gloss.

Fellow Australian actress Margot Robbie opted for a more dramatic look for the occasion, slipping into a backless silver gown and sporting a sultry smoky eye.

Giggling: The mother-of-three shared an amusing a chat with the Duke of Cambridge, Prince William – his wife Kate, the Duchess, was notably absent from the event

Glitzy gala: The A-list guests enjoyed a lavish dinner in Windsor Castle’s Great Hall, where they took their places at two long rows of tables

Model of the moment Cara Delevingne stunned in an embellished black gown with an intricate beaded bodice and long skirt.

The 21-year-old pulled her locks off her face in a severe bun and she wore lashings of dramatic dark make-up while Lily James opted for a similar look.

The actress shone in a heavily beaded silver and black frock with a dramatic feathered skirt.

Meanwhile, Ralph Lauren’s wife Ricky adorned her white gown with layers upon layers of delicate frills which culminated in a bold frilled neckline.

More is more: Actress Lily James (L) and Cara Delevingne (R) opted for more dramatic looks in beaded embellished gowns

Guests of honour: Ralph Lauren was a sponsor of the charity event and attended with his wife Ricky

Dramatic: Margot Robbie’s silver gown featured a daring open back while Chinese actress Zhang Ziyi added opulence with layers of fluttering feathers