The 26-year-old won the Best Actress statuette at Sunday night's (28Feb16) ceremony for her work in kidnap drama Room, and she wowed on the red carpet in a stunning blue dress by Gucci.

It was the first time the brand's creative director Alessandro Michele had designed a gown for the ceremony, and he was happy to embrace the challenge, particularly when it came to the garment's colour.

"Brie wanted to do something blue like the colour of lapis lazuli or the Maid (Virgin) Mary paintings of the Renaissance," he told WWD. "It's not a common colour for an evening dress. I like her very much and I am happy to see her win. It's all a dream, creating clothes for such artists."

Brie's stylist Cristina Ehrlich also revealed to Britain's The Telegraph the shade was key to the overall look they were going for, and the fact Alessandro was new to designing Oscar gowns was also crucial.

"It was important for us to work with a designer who is very fresh on the scene," she explained. "Alessandro has never designed for the Oscars before - like Brie, he is new to Gucci, just as she is still discovering who she is as an actor on the red carpet and this also being her first Oscars."

Brie's custom made ruffled gown was completed by a pearl-encrusted belt, which had the perfect finish.

"We both agreed it was another element of the dress that needed to be added," Cristina continued.

While Brie was the only female star Alessandro designed for on Sunday night, for the men, he created the outfit worn by his male muse, Jared Leto.

The 44-year-old wore a black suit with red piping around the edge of the jacket and down the seam of the trousers, coupled with a black shirt and a red floral pin, which really made him stand out from the crowd.

"Jared sought me out to work with him," Alessandro added to WWD. "I like that he is a risk-taker, he doesn't care what people think. And he looks amazing tonight."