Margot Robbie Stuns in Vibrant Open-Back Dress for Babylon Premiere

The London premiere of 'Babylon' took place at Waterloo's BFI Imax on Thursday evening.

Margot Robbie was a vision at the London premiere of Babylon on Thursday.

The Australian actress looked ravishing in red as she showed up to the BFI Imax in Waterloo wearing a Valentino poncho gown with a halter neck top and open back. She accessorized the look with a matching bright red lip and a pair of gold sandal heels that could be seen peeking out from under the floor-length gown.

Her co-star Brad Pitt was also in attendance for the event, wearing a dark checkered suit with a grey button-down shirt underneath.

Robbie, 32, also posed for some shots with her back facing the cameras, showing off the elegant open-back part of the dress that revealed her bare skin.

The bombshell red carpet appearance from Robbie comes on the heels of the Golden Globe Awards, where she dazzled in a jaw-dropping baby pink dress from Chanel.

The custom dress reportedly took up to 750 hours of work to make, and incorporated 30,000 elements of sequins, bugle beads and feathers, according to PEOPLE. The look was finished off with a sparkly brooch right in the center of the neckline, as well as a pair of blingy diamond earrings.

At Tuesday night's award show, Robbie was among the nominees for Best Actress in a Musical or Comedy Motion Picture for her Babylon role, marking her third time being nominated for a Golden Globe.

In addition to Pitt and Robbie, the film also features Tobey Maguire, Diego Calva, Olivia Wilde, Jean Smart, and more notable names.

Babylon is currently still playing exclusively in theaters.