Emma Corrin believes that there will "always be some fluidity" in their gender identity and said future generations are less worried about binary distinctions.
Corrin won awards, including a Golden Globe, for playing Princess Diana in Netflix royal drama The Crown and was nominated for an Emmy for the role.
They came out as non-binary in 2021 and revealed they were starting to use breast binders as they explored their identity.
In a new interview with Vogue, Corrin said they were relaxed about close friends and family still using feminine pronouns in conversations.
"I feel much more seen when I’m referred to as ‘they', but my closest friends, they will call me ‘she’ and I don’t mind, because I know they know me," they said.
Corrin added: "In my mind, gender just isn’t something that feels fixed, and I don’t know if it ever will be. There might always be some fluidity there for me."
Corrin revealed they have struggled to reconcile their gender identity and dating preferences — seeing men and women at times — but received support from their younger brother, who is bisexual.
"The next generation is so much more chill. They are finding a way to express themselves which is less binary in a very organic way. While we’re almost caught in between," said Corrin.
Corrin's next roles include co-leading a new adaptation of Lady Chatterley's Lover with Jack O'Connell and then starring alongside Harry Styles in My Policeman for Prime Video.
The latter movie sees Styles play a closeted cop called Tom, who marries Corrin's Marion while trying to hide his secret from the rest of the world.
Corrin revealed that they "really had a laugh" with their dresser on My Policeman over fitting them with 1960s-style bras.
"I remember struggling with having to wear bras in Chatterley and as Marion, but it’s quite difficult, because I’m not Emma, right? I’m an actor, and I have a job to do," they added.
My Policeman is due to be released via Prime Video and in cinemas later this year.
Watch: First teaser trailer for My Policeman