Robbie, 35, stars in Emerald Fennell's upcoming adaptation of Emily Bronte's novel, which follows the passionate relationship between Catherine Earnshaw and Heathcliff.
The Barbie star was pictured at the event at the TCL Chinese Theatre in Los Angeles wearing a striking Gothic ensemble, with her hair pulled back into a bun.
Robbie wore a Schiaparelli gown, which had a nude lace corset bodice with floral detailing, which led into a flowing black skirt which faded into a deep red hemline.
The actor paired the outfit with custom-made Lorraine Schwartz diamond earrings and a large, heart-shaped necklace.
Robbie's pendant has been confirmed by the estate of 1950s Hollywood star Elizabeth Taylor as one of the most significant pieces in her collection - her Taj Mahal diamond Cartier necklace.
The necklace dates back to 16th century India and was given to Taylor for her 40th birthday in 1972 by her husband, Welsh actor Richard Burton.
Robbie was seen on the red carpet smiling and holding hands with her co-star, Australian actor Jacob Elordi - who was dressed in an all-black suit and black shoes.
Charli XCX was also seen at the premiere, wearing a gold Vivienne Westwood strapless gown with a puffed skirt.
The Brat singer has written an album for the upcoming film, with tracks including Chains Of Love and House, featuring the Velvet Underground's John Cale, already released from the record.
Wuthering Heights is set in the 18th century and based on the Yorkshire moors, and follows the obsessive love affair between the wild Catherine Earnshaw (Robbie) and the vengeful Heathcliff (Elordi).
The 2026 adaptation of Bronte's 1847 classic novel has been written, directed and produced by Oscar-winner Fennell.
The film will be released in cinemas across Australia on February 12.
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