Also Blythe Danner is “1776” (as with Patrick Cassidy, Gweneth Paltrow did not get a screen credit)
Susan Sarandon played lead in 1985’s Compromising Positions. She was a Long Island housewife who decided to investigate her dentist’s murder, with hopes of reviving her reporting career. The disturbingly attractive Raul Julia played the detective on the case; Edward Hermann was her neglectful husband.
Sarandon unexpectedly became pregnant before shooting started. So they dressed her in Mommy Sweats & just ignored her condition. It worked.
(This excellent movie is not on DVD, alas.)
Are you sure? I thought that her pregnancy was the reason the show went on a half-season hiatus (and not the one caused by the WGA strike). (Technically, this happened twice, IIRC, but the first time delayed the start of the first season, so it wasn’t really a “hiatus”. I think the same thing happened with Amy Poehler and Parks & Recreation. In both cases, they could have “hidden” the pregnancy, but both Fey and Poehler do so much more than act on those shows that they pretty much had to hold off on production.)
The main gimmick was, when Susan Saint James was pregnant, they had her fall down a flight of stairs (short version: they got a $500 reward for finding a man’s wallet with thousands of dollars in it, and each was supposed to buy something “frivolous” with their $250, but Allie bought an expensive sewing machine and tried to hide it from Kate by putting it on a staircase; Kate didn’t see it when she needed to descend the stairs for some reason). There was also one episode where they had a flashback to when both were pregnant with their daughters, so they wouldn’t have to hide St. James’s condition.
Kristen Bell in the Veronica Mars movie.
You’re welcome, it cannot be unseen. 
(apologies for my misspelling of Ms. Headey’s name before. Missed the edit window)
IRONY!!!
She was pregnant and hiding it because she was playing a character that was adopting because she couldn’t get pregnant!
Pretty sure Fey was onscreen pregnant. I was watching some second season eps the other day thinking, “Is she pregnant”?
I guess it doesn’t count as the OP question though cause no one was trying to hide it yet.
as for Nana Visitor, remember when she said to Bashir “You put this in me!”
I want y’all to ponder this: If your life choices hurt a production. Shouldn’t they be allowed to ax you? They may very well make the decision not to because you’re incredibly valuable but why should there be a legal prohibition against it?
Just ponder that but do not respond. Carry on.
Sorry, I’m going to respond just a little cause it’s touched upon in that 30 Rock ep where Liz has to pretend to be pregnant so Avery can get a job she otherwise wouldn’t get because she (Avery) is pregnant. Predictably, Liz and Jack have different opinions on the subject.
HIMYM did a couple of scenes showing Alyson Hannigan’s pregnant belly as a stand-in for the character binging on food. It was a hilarious in-joke if you knew about the pregnancy.
I’m responding because this is a web forum whose very purpose is the exchange of ideas. If you want people to not-respond, you start a blog and turn the comments off.
Anyway, my answer is no. If you’re going to create a production using the talents of women of child-bearing years then you accept the risk that one of them may indeed bear a child. And, if you have any sort of aptitude in producing, you’ll have ways to work around it.
Mary McCormack concealed her pregnancy on The West Wing. But later when she was the lead on In Plain Sight and was again pregnant, it was decided to write it into the show.
What, no one’s going to mention Sophia McShera as Daisy on Downton Abbey? 
I’ll decide what I want to respond to.
The big precedent here is the Hunter Tylo lawsuit. Tylo was cast on Melrose Place and then announced she was pregnant. The studio decided her pregnancy wouldn’t fit the character and recast the role with another actress. Tylo sued the show for wrongful termination. She won $4,800,000.
As a result, I’m guessing shows would be very wary about firing a pregnant actress.
Amanda Righetti playing Grace Van Pelt in The Mentalist was pregnant during season 5. Her character was frequently assigned desk duty and filmed behind desks or boxes to hide her pregnancy.
Except in the episode “The Killing Game” in which the Hirogen trapped the crew in a holodeck simulation and made them believe they were French freedom fighters resisting the Nazis in World War II. They wrote in Dawson’s pregnancy, having B’Elanna believe that she was pregnant, down to having the holodeck simulate the appearance of pregnancy. Dawson said it was fun being able to “let it all hang out” in that episode.
Tiffany Thiessen, who plays Elizabeth Burke in White Collar, was pregnant during the second season. They dealt with it by sending the character to San Francisco for work-related reasons.
Wasn’t Cybil Shepherd pregnant on one season of Moonlighting?
I recall reading that when Marian and Harold were embracing (I believe it was after the picnic), young Mr Cassidy let loose with a kick that caught Robert Preston pretty solidly in the gut. They had to reshoot.
Go Fug Yourself had a running “Wombouflage” count in all their recaps last season to count the big purses, lamps, etc., that were deployed to hide it.