Sienna Miller (File Photo)

    BEIJING, July 19 (Xinhuanet) -- Hollywood actress Sienna Miller joined hands with Indian superstar Amitabh Bachchan Tuesday to urge Indians to do more to curb global warming, media reported Thursday.

    The gorgeous blonde, 25, met Bachchan in Mumbai at the start of a weeklong trip to India as an ambassador for Global Cool.

    "If each one of us does our bit, we will be helping to keep global warming from harming our countries," Miller said.

    Bachchan, Bollywood's biggest movie star, announced that the Indian International Film Academy would partner with Global Cool -- an organization that spreads awareness about global warming, to increase knowledge about greenhouse gas emissions.

    Miller's screen credits include "Interview," "Factory Girl," "Casanova" and "Alfie."

    Miller was previously engaged to British actor Jude Law and reportedly broke off their engagement in 2005 after he publicly apologized for cheating following reports that he had a fling with the nanny of his three children.

    (Agencies)