Kate Middleton and Prince William supported the 73rd British Academy Film and Television Arts Awards' move to sustainability by re-wearing their old outfits. The Cambridges stunned everyone when they arrived at the Royal Albert Hall, looking as dazzling as ever in their recycled ensembles.

The Duchess of Cambridge looked very elegant in her custom Alexander McQueen gown by Sarah Burton. It was a long white gown with a flowing skirt, short sleeves, and gold metallic design across the whole garment.

Kate Middleton first donned this dress at a state dinner in Malaysia in 2012, per Express. Eight years later, she once again gave life to this stunning piece.

She completed her look by wearing a new pair of gold Jimmy Choo heels and an Anya Hindmarch clutch bag. She wore her hair tied back, giving a full view to her Van Cleef and Arpels dangling earrings and drop necklace that reportedly cost £7,603.

The mother-of-three was holding her dress up as she made her way up the stairs. She even thanked her well-wisher, who praised her beauty, calling her beautiful. Another one also commended Prince William's look, saying he, too, looked good.

Prince William also re-wore one of his favorite tuxedos at the BAFTA. Hello! Magazine noted that the royal family had been known for repeating their outfits, althogh they get plenty of clothes out of their wardrobes.

Hollywood royalties stood up when the real royals made their way to the front of the audience to take their seats. The future queen consort was all smiles, wearing her pink lipstick paired with dark smoky eyes.

There were earlier predictions that Kate Middleton would re-wear a dress for the BAFTA after it collaborated with the London College of Fashion to create guidance for guests on how to make sustainable fashion. The move was part of the award-giving body's efforts to make the event carbon neutral for the first time.

BAFTA chairwoman Dame Pippa Harris cleared that they didn't want to "police" what people do, but they only wanted to provide them options. "It's a combination of suggesting that people might want to re-wear, or they might want to hire something rather than buying it," she explained.

Prince William and Kate Middleton have been the traditional guest of honors at the event. They have been gracing BAFTA since 2017, making it their fourth time to be at the ceremony. The second in line to the throne is also the its president since February 2010.