The pair's new movie, Eternals, follows a race of immortal beings who have lived on Earth since the dawn of time and helped shape history.
She told the fashion magazine: 'She and Ikaris are kind of immortal soulmates.
Eternals is a 2021 Marvel film based on the fictional race of humanoids of the same name which appears in the American comic books.
The latter sparkles were arranged in giant swirls, and the gown's neckline was topped with a thin layer of black fabric.
Her father was an engineer who grew up in Hong Kong, while her mother was a pharmacist and raised in , Scotland after her parents emigrated from China.
MailOnline may earn commission on sales from these product links Meanwhile, her on-screen partner Richard cut a handsome figure in a black silk suit at the movie event.
There aren't many people of colour in those positions.
She wrote: 'We're used to top-notch bickering from Marvel but the self-aware, sibling-like rivalry here seems extra divine because it allows ideas explored in Nomadland to be revisited.