March was born Jane March Horwood in Edgware, London. Her mother, Jean, is Vietnamese and Chinese and Her father, Bernard Horwood, is English and Spanish. March has one brother.
At age 14, March won a local "Become a Model" contest. She signed with Storm Model Management and began working as a print model using her middle name March, which was also her birth month.
After being spotted on the cover of Just Seventeen by French director
Jean-Jacques Annaud, she was chosen to play the female lead in his film
The Lover (1992), based on a semi autobiographical novel by
Marguerite Duras.
Two years after
The Lover (1992), she co-starred with
Bruce Willis in the erotic thriller
Color of Night (1994), directed by
Richard Rush. She later said, "I didn't like the script at all, but it was a Bruce Willis film and I wasn't going to turn it down".
While
Color of Night (1994) was in production, March began dating the film's co-producer
Carmine Zozzora. The couple married in June 1993 in an 11-minute ceremony at which
Bruce Willis was the best man and
Demi Moore was the maid of honor. They separated in 1997 and finally divorced in 2001.