Leonardo DiCaprio Gets Support from Marion Cotillard At 'Before The Flood' Paris Premiere - Watch Official Trailer!

Leonardo DiCaprio is mighty fine in a suit while hitting the red carpet at the premiere of his new film Before The Flood held at Theatre du Chatelet on Monday (October 17) in Paris, France.

The 41-year-old actor-executive producer was joined at the event by director Fisher Stevens, Mayor of the city of Paris Anne Hidalgo, and pregnant Marion Cotillard, who came out to show her support alongside her longtime love Guillaume Canet.

PHOTOS: Check out the latest pics of Leonardo DiCaprio

Before The Flood is a documentary that gives a look at how climate change affects our environment and what society can do prevent the demise of endangered species, ecosystems and native communities across the planet – Watch the trailer below!

25+ pictures inside of Leonardo DiCaprio and others at the Before The Flood premiere…