Kate Hudson at Clinton Global Initiative

Sienna Miller Lends Star Power to the Clinton Global Initiative

Sienna proudly wore her name tag as she headed to the CGI.

Sienna Miller helped close out the Clinton Global Initiative in New York Thursday. She spoke to the annual conference about her work with International Medical Corps, which operates programs in the Democratic Republic of Congo, Haiti, and Ethiopia. Trading red-carpet glamour for a low-key suit and name tag, Sienna looked ready to talk humanitarian work. Yesterday, Sienna's fellow actress Kate Hudson also stopped by the Clinton Global Initiative on behalf of Ann Taylor. As we know from Kate's stunning ads, she is an ambassador for the brand, which also works to further female leadership around the world with its ANNPower initiatives. Kate discussed those projects on day two of the CGI.

While the Clintons — Bill, Hillary, and Chelsea — provide plenty of interest, each year the Clinton Global Initiative attracts a range of world leaders, Nobel Prize winners, and socially responsible celebrities, like Sienna and Kate. Former President Bill Clinton plans the conference to coincide with the UN General Assembly, when heads of states come to New York City. This year, famous faces like Sean Penn, who spoke about Haiti, and Bono, who gave his best Bill Clinton impression during a panel on corporate responsibility, also stopped by. And President Obama made an appearance to talk Obamacare.

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