The 46-year-old's representative confirmed the news, saying, "We can confirm that Halle Berry and Olivier Martinez are expecting a child."
Berry got engaged to her hunky "Dark Tide" co-star Martinez, 47, back in January 2011. The couple confirmed the happy news a few months later, but have yet to set a wedding date, reported Us magazine.
In an interview recently, Berry had admitted that Nahla was pining for a sibling.
"That's the thing. My daughter is asking me. Every night we pray to God, and she's so sweet. She says, 'God, please bring me a bunk bed and a baby sister.' And I say, 'I can do one of those things, I know for sure! The other one we have to keep praying on.' What do you say to her when she wants that and can't understand why God's taking so long, you know?," she had said.