Washington, Feb 03 : Halle Berry and partner Gabriel Aubry want to expand their family.

Gabriel, who hails from a big family, said that he believes in having a big family, and thus wants his daughter with the actress, Nahla Ariela, to have a sibling.

"She needs a sibling, I think it''s important," People magazine quoted Gabriel, as saying.

"I''ve never known anybody who''s had a single child [and] I''ve always been around big families, I believe in big families," he added.