By Breaking Celebrity News Staff

It was a very different Mel Gibson who partied with some very special girls in Malibu Friday.

Gibson attended the 10th birthday celebration for Josie and Teresita Cajas. The girls were born conjoined at the brain in Guatemala, and were brought to the U.S. where they were separated at Mattel Children's Hospital UCLA in 2003.

Mending Kids International an organization that provides surgical care for needy kids around the world,  was instrumental in arranging the Cajas girls surgery and paying for their ongoing medical expenses.

And it turns out that Gibson, who is typically in the news for somewhat less charitable endeavors, is a MKI supporter, donating his time and money to the cause.

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He certainly helped make the beating-the-odds birthday celebration extra special for the sisters and their U.S. host families.

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