La Vie D'Adele, a story about two young female lovers by French filmmaker Abdellatif Kechiche, has won the 2013 Palme d'Or, the top prize at the Cannes Film Festival.
White gowns dominated at the Cannes screening of Nebraska.
Heidi Klum, Nicole Kidman and Elsa Zylberstein all wore stunning pale floor length dresses.
Emma Watson has come a long way since the days of Harry Potter, the actress plays a celebrity-obsessed teenager who turned to crime in her latest film.
Directed by Sofia Coppola, The Bling Ring is based on a real-life gang fixated by glamour, who stole $3 million of luxury goods from celebrities including Paris Hilton and Lindsay Lohan.
Watson said: "I enjoy the chance to transform into new roles and work with new creative people," she added, "Harry Potter seems like such a long time ago."
The Harry Potter star, who dons a Los Angeles accent in the film, said she prepared for the role by watching reality TV like Keeping up with the Kardashians and The Hills"
The film received welcome reviews after its first screening at Cannes Film Festival yesterday.
Leonardo DiCaprio told Daybreak's Kate Garraway that he has looked on his experience of filming The Great Gatsby as "an incredible opportunity that I don't want to squander and I look at it as an incredible gift."
When asked if he could identify with his character Jay Gatsby's party lifestyle he said: "I have been to some parties in my life and I have been to premieres but thank God that is not my life 24 hours a day, thank God!"
Leonardo Di Caprio has emphasised the importance of The Great Gatsby novel in the United States.
Speaking at the Cannes Film Festival he said: "Gatsby is compulsory reading in secondary school.
"People today still try to dissect this novel, to interpret every line, it's a kind of endless quest. We wanted to re-shape the novel's characters. It is so exciting to work with a text of this calibre."
Audrey Tatou, the host of the 66th Cannes Film Festival opening ceremony paid homage to Steven Spielberg's E.T. in her speech last night. She said:
"Hearts that are ready to be charmed, moved, amazed, stopped, whether or not they are all decked out for the occasion, hearts here and elsewhere, hearts that have loved cinema ever since the day that a film, the first one, transported them to seventh heaven."
She added that for her, that film was E.T., and this strange creature "that kept on repeating Call home, call home".
The granddaughter of F Scott Fitzgerald has praised Baz Luhrmann's film adaptation of her grandfather's book The Great Gatsby.
Speaking at Cannes, about his experience at the film's première in the United States, the director said:
"At the end of the film, a woman looked at me and and said 'I've come from Vermont to see what you did with my grandfather's book.' I froze. She added: 'I think Scott would have been proud of this film.' It's the best compliment I've received."
Luhrmann added that he read the book whilst on a train in Siberia, "I had a copy of the novel. I read it. That's how everything started," he said.
The Cannes jury have given their opinion on what they will be looking for as they judge the winners of this year's festival.
Steven Spielberg said: "My opinion is very straightforward, we are always judging, we are constantly judging films we see at the cinema, evaluating them and trying to see what is radically new in them. Films are always in competition with each other for audiences' attention."
Nicole Kidman said: "I think that it is important to contribute to the celebration of film. I finally had the time to sit down and watch films. Cannes is a prestigious festival that has done a lot to promote the films in which I have acted."
Christoph Waltz said: "An award is always the result, but the result of what? Good psychoanalysis involves both a psychoanalyst and a patient. We each of us have our way of carrying out our task and mine is perhaps more descriptive than Cristian's."
The stars of Baz Luhrmann's The Great Gatsby have lined the red carpet in Cannes for the film's festival premiere.
Leonardo DiCaprio plays Jay Gatsby in Luhrmann's 3D extravaganza which also stars British actress Carey Mulligan and Isla Fisher.
The film, which is an adaptation of F Scott Fitzgerald's novel, opened the 66th Cannes Film Festival in the South of France.