AceShowbiz - Katherine Heigl is planning to expand her family with another child - she's hoping to adopt a baby from earthquake-ravaged Haiti. The "Knocked Up" star became a first-time mother last September 2009, when she and her husband Josh Kelly adopted daughter Naleigh from Korea.

Heigl admits she's so happy with her role as a new mum, she wants to bring another child into the family - and she's considering heading to Haiti to help the youngsters who lost their parents in January's devastating tremor.

She tells Germany's Gala magazine, "We would like to have a second child - adopted or biological. We're not ruling it out. She added, "Just look at Haiti. They're so many parent-less children. It breaks my heart. I want to help."