In16th of December 1986, Rebecca got married to Bruce Wagner. Bruce Wagner is also a novelist and screenwriter from United States. This married life lasted for only four years as they dissolved their marriage on 2nd of December 1990.
In 1992, Rebecca co-produced the ninth studio album by Canadian singer-songwriter Leonard Cohen, 'The Future'. During this time they had a romantic love affairs, and they also got engaged. But this engagement was called off within few months.
In 1995, she began dating Patrick O'Neal. Patrick O'Neal is a former actor. These days he is active as a studio host and reporter and he is working for Fox Sports West/Prime Ticket. From this romantic love life they had two lovely daughters named Veronica De Mornay-O'Neal and Sophia De Mornay-O'Neal. They broke up in 2002.
When Rebecca was two, her parents announced their separation and they finally got divorced. She began living with her mother and when she was just five her mother got married for the second time to Richard De Mornay. She was raised in Leiston, Suffolk, England and there she got enrolled at the independent Summerhill School. She also attended Lee Strasberg Institute. In 1981, she entered into the acting world by appearing in a musical film 'One from the Heart'. Two years later, she was seen in the movie Risky Business where she starred the role of Lana. This role was her breakthrough role in her career as it provided her critical acclaims. She is also famous for playing the role of Sara in the movie 'Runaway Train'. Her net worth is $9 million. She is now 56 years old and her height is five feet and five inches tall. She has white ethnicity.