'Downton Abbey' star and wife reveal her pregnancy on the red carpet at his movie premiere, plus more stars expecting babies

Wonderwall.com rounded up all the celebrities who are expecting new additions, starting with this couple... Allen Leech -- who plays Tom Branson on "Downton Abbey" -- is going to be a girl dad again. The Irish star's wife, "The People v. O.J. Simpson: American Crime Story" actress Jessica Blair Herman, debuted her baby bump on the red carpet at the "Downton Abbey: A New Era" movie premiere in New York City on May 15. "I'll be well outnumbered," Allen -- who welcomed his first daughter with Jessica in 2020 -- joked to Page Six, adding that their second daughter is due in "late September, early October."