The first trailer has gone online for The Danish Girl, a movie that documents the world's first transgender woman.
The Danish Girl tells the story of transgender woman Lili Elbe, and is already being pegged for Oscar glory.
Born Einer Wagner in the late 19th century, Elbe underwent gender reassignment surgery in 1930 and became a prominent fixture in newspapers as a result.
Redmayne stars as Elbe, with Alicia Vikander (Ex Machina) co-starring as her wife Gerda.
The trailer shows the two young and in love, but their marriage becomes rocky when Elbe begins to realise who she really is.