Salma Hayek

Leonardo DiCaprio teamed up with Christie's to cohost the 11th Hour Auction in NYC last night. It was a successful event for Leo since the auction reportedly raised $35 million to benefit environmental and wildlife conservation efforts, almost doubling the goal of $18 million. He had the support of his longtime friend and Great Gatsby costar Tobey Maguire, who put in a winning bid on one of 33 pieces of contemporary art. Leo contributed something from his own art collection, a print called "Ocean V" by well-known photographer Andreas Gursky. Also out for the evening were Bradley Cooper, Mark Ruffalo, and Salma Hayek.

It was Leonardo's second art-inspired outing in as many days, since he also made an appearance at the Brant Foundation Art Study Center's Andy Warhol showing in Greenwich, CT, on Sunday. He'll be switching gears from art to film in the coming days, though, when he debuts The Great Gatsby in Cannes later this week.

We have the third annual CinemaCon to thank for bringing together some of our favorite stars in one place: Las Vegas. Sandra Bullock, Elizabeth Banks, and Hailee Steinfeld are just three of the style-setters who made up this year's list of attendees — and we're looking to their dressed-up looks for serious cocktail-party inspiration. Without further ado, step inside to see who wore what at this year's CinemaCon.

Salma Hayek and Taylor Lautner teamed up for a photocall in Cancun yesterday as part of promotions for their upcoming movie Grown Ups 2. The duo was also joined by fellow castmates Adam Sandler, Kevin James, and David Spade, all of whom attended CinemaCon with Salma and Taylor on Wednesday in Las Vegas. Missing from both promotional stops were the group's other costars Maya Rudolph and Chris Rock. The Grown Ups 2 cast did get together as a whole, though, for an appearance on The Ellen DeGeneres Show, which aired on Wednesday as well. During the show Maya finally confirmed she was pregnant with her fourth child, and the cast joked that she will be naming her newborn Grown Ups 3.

Apart from the funny times Salma is partaking in during her promotional duties, she has a more serious project well in the works. Salma cofounded the Chime For Change women's organization with Beyoncé Knowles and Gucci creative director Frida Giannini. Salma was on hand last month to announce that Beyoncé will be one of several artists to perform at the organization's global charity concert on June 1 in London.

Salma Hayek and John Legend posed with activists Sharmeen Obaid-Chinoy and Mariane Pearl at a photocall for the new Chime For Change charity in London yesterday. The organization, which was founded by Salma, Beyoncé Knowles, and Gucci creative director Frida Giannini, announced that Beyoncé will headline a global charity concert in London on June 1. John, who serves on the Advisory Board for Chime For Change and will perform at the upcoming event, spoke at the concert's press conference about his involvement in the organization, which raises funds to improve the lives of women worldwide. He said, "All men should be feminists. If men care about women's rights, the world will be a better place." Florence and the Machine, Ellie Goulding, and Timbaland will also be performing at the event.

Salma Hayek took the stage at the Avon Communications Awards in NYC yesterday. The second annual event was held at the United Nations Headquarters, where Salma stepped up to her role as The Avon Foundation's ambassador to speak out against violence against women. Addressing the room full of activists, Salma said, "I just presented at the Academy Awards and I was not even half as nervous and scared as I am today, but also not half as excited as I am to be with you."

The actress signed on with Avon's anti-domestic-violence campaign in 2004 and has continued to flex her power with the recent launch of Chime for Change with Beyoncé Knowles. Salma and Beyoncé teamed up with Gucci for the initiative, which supports projects by women around the world. Salma's husband, Francois-Henri Pinault, who is the CEO of PPR, which owns Gucci, has rallied behind his wife to support her efforts.

Salma Hayek was in Long Beach, CA, yesterday to officially launch Chime For Change, a new charity initiative devised by Salma, Beyoncé Knowles, and Gucci, at a TEDxWomen event. Salma's husband, Francois-Henri Pinault, is the CEO of French luxury company PPR, which owns Gucci, and as such, is the driving force behind the project, which aims to raise funds and awareness to support projects by women around the world. Beyoncé was not able to attend yesterday, but Salma nonetheless posed for photos with other guests, including Jada Pinkett Smith.

Salma took the stage to speak about the project and introduce a short film that featured Beyoncé. In a press release announcing the endeavor, Beyoncé spoke about what Chime For Change means to her. She said, "I have always felt strongly about equal opportunity for women. Girls have to be taught from early on that they are strong and capable of being anything they want to be. It's up to us to change the statistics for women around the world. I'm honored to be in the company of women who live fearlessly and set an example for the next generation of young ladies."