Sources told Us Weekly the 36-year-old Guardians of the Galaxy actress is three months pregnant, but is waiting for the right time to make the announcement.
"She will only announce the news when she's ready," and insider told the publication.
News of the actress' upcoming bundle of joy comes in the middle of her promotional tour for Guardians, out on August 1.
"Zoe has always wanted a big family," a second source said of the actress' pregnancy, "and Marco's on board too!"
Saldana and Perego married last June in a secret ceremony in London.