Mel Gibson was spotted on Saturday with his estranged wife for a special and rare occasion. The two gathered, with three of their seven children and three of their grandchildren, for the 10th birthday party of Maria de Jesus and Maria Teresa Quiej-Alvaraez.
If these names sound familiar, that’s because the two Guatemalan girls were born as conjoined twins connected at the skulls. The girls made the news worldwide when surgeons at Mattel Children’s Hospital at UCLA Medical Center operated and separated the two in August 2002.
“We’re all involved in Josie and Teresa’s lives,” Gibson told PEOPLE. “It’s incredible seeing Josie and Teresa do so well. Listening to Josie speak, you think, ‘Man, this is the happiest kid I’ve ever seen.”
Gibson and his estranged wife are huge contributors to the organization, Mending Kids, which provides life-altering surgical care for children worldwide. Robyn, Gibson’s estranged wife, was the former president of the board of directors for the group.
Gibson recently took two medical trips with the Mending Kids group to Guatemala and Panama.
“We gave them financial support, but it was hands-on sometimes. I remember Robyn taking care of children who came here [for surgery],” he said. “All of my kids do give back. Our children have been raised that way and that will be an integral part of their lives as they move on.”