Yara Shahidi and little brother Sayeed Shahidi came out in their costumes for the 2012 “Dream Halloween” presented by Keep A Child Alive at Barker Hangar in Santa Monica, California on October 27th.

Both siblings are busy working on various projects. Yara and Sayeed currently share the big screen together in the new thriller, “Alex Cross”  alongside Tyler Perry and Cicely Tyson. The brother/sister combo also both star in the new Entertainment Studios sitcom, “The First Family.”

Keep A Child Alive is a non-profit organization “dedicated to providing life-saving AIDS treatment, care, nutrition, support services and love to children and families affected by HIV/AIDS in Africa and India by directly engaging the global public in the fight against AIDS”

For more information, head to Keep A Child Alive.org

See more pictures of the duo below!