Kathmandu, Oct 10 (ANI): UNICEF South Asia Ambassador Aamir Khan said its time to change, give equal rights to girl child and join hands to fight malnutrition. Khan said in Kathmandu that child stunting remains one of the greatest development challenges in South Asia, adding that stunted children have stunted bodies, stunted brains and stunted lives. Khan, who is on a three-day visit to Nepal, was named UNICEF's national ambassador for India in 2011. The UN agency officially announced Khan as new UNICEF ambassador after he visited Kapilvastu and Lumbini in west Nepal on Wednesday to observe a locally initiated nutrition programme by women health volunteers, saving thousands of children from malnutrition, a common phenomenon in South Asia.