Margot Robbie Shows Off Her Butt in Completely Sheer Backless Gown

Margot Robbie just redefined red carpet glamour in one of her most iconic and daring looks yet.

The actress, 35, was shimmering like a living constellation in a diamond-encrusted backless gown that left little to the imagination while attending the A Big Bold Beautiful Journey premiere in London, England.

All eyes were on Robbie the moment she arrived in Odeon Luxe Leicester Square on Thursday, September 11, in a gown from the Armani Privé spring 2025 couture collection with a sheer design that elegantly showed off her butt and barely-there undergarments, with intricate embellishments and a diamond brooch around the nape of her neck.

The front of her floor-length dress was also a breathtaking work of art, featuring floral motifs with a soft scoop neckline and spaghetti straps, offering a racy yet tasteful glimpse of skin beneath.

Robbie opted for sparkling earrings, a cocktail ring and a sleek, center parted updo that highlighted her cheekbones, paired with an understated glam that let her natural beauty do all the talking.

Fans couldn’t help but rave over how incredible the star looked nearly one year after welcoming her first child, a baby boy, with husband Tom Ackerley in October 2024.

Robbie also posed for photos alongside costar Colin Farrell at the event, hours after rocking a chic outfit for the London photocall consisting of a cream colored bra-like top and a nude pencil skirt with a thigh-high slit and matching pointed-toe Christian Louboutin stiletto heels.

Robbie completed her sophisticated look with shades from the Khaite x Oliver Peoples collaboration during the photo shoot on the rooftop of the Corinthia Hotel, wearing her tresses in a sleek straight style.

The movie tells the story of Sarah, portrayed by Robbie, and David, played by Farrell, who meet at a mutual friend’s wedding and “the unbelievable journey” that ultimately connects them.

A Big Bold Beautiful Journey hits theaters on September 19.