Hilaria,35, and Alec Baldwin,61, are expecting their 5th child after she suffered a miscarriage earlier this year.
They are already parents to Carmen Gabriela, 6, sons Rafael Thomas, 4, Leonardo Ángel Charles, 3, and Romeo Alejandro David, 15 months.
Alec is also dad to model daughter Ireland Baldwin, 23, with ex-wife Kim Basinger.
Chris Noth, 64, is expecting his second child with wife Tara Wilson, 37.
They welcomed their first child, Orion Christopher, 11, in 2008.