Mark Zuckerberg and Priscilla Chan are expecting a baby girl

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Mark Zuckerberg announced on Facebook that he and wife Priscilla Chan are expecting a baby girl. Credit: Reuters

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Mark Zuckerberg announced on Facebook that he and wife Priscilla Chan are expecting a baby girl. Credit: Reuters

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Mark Zuckerberg announced on Facebook that he and wife Priscilla Chan are expecting a baby girl. Credit: Reuters

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Mark Zuckerberg announced on Facebook that he and wife Priscilla Chan are expecting a baby girl. Credit: Reuters

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Mark Zuckerberg announced on Facebook that he and wife Priscilla Chan are expecting a baby girl. Credit: Mark Zuckerberg/Facebook

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Mark Zuckerberg announced on Facebook that he and wife Priscilla Chan are expecting a baby girl. Credit: Mark Zuckerberg/Facebook

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