The Matrix Reloaded star shot the nude scenes for the aptly-titled Un été brûlant, which translates as A Scorching Summer. And she says that she felt safe stripping for director Philippe Garrel, even though the request came at a "fragile moment as a woman". Monica is married to Black Swan star Vincent Cassell and they have an older daughter, Deva, born in September 2004.
She celebrated the birth of Leonie, in May 2010, with a naked front cover on Vanity Fair.
The stunning star has never shied away from saucy roles.
After stripping off for the 2002 movie Irreversible, she said: "I'm not scared by nudity, because for me, nothing is more beautiful than a body.
"You can have such an amazing emotion from a body. In Irreversible, I treated my body like it was an object and it's great when you can have this kind of relation with your body, it's a part of your job, an object you can work with."
Now 47, she's still got a body to be proud of.