Ever wondered what happens when an actress gets pregnant smack bang in the middle of filming a movie or tv show? Like, what if the filmmakers can't write it into the storyline? And what if they can't kill the character off or send them on a 'holiday' because they're playing a leading role? What happens then?

Well, they get creative!

More often than not, the filmmakers are so good at it you barely even notice. But sometimes, there are sneaky giveaways - like characters wearing progressively more oversized clothing. Or suspiciously holding things in front of their bellies.

Watch: Things pregnant people NEVER say. Post continues below.

Did you know Courtney Cox was pregnant inFriends? Or that Gal Gadot was expecting during the filming ofWonder Woman? Or that Sarah Jessica Parker was having her first child inSex and the City?

We've pulled together 14 celebrities who filmed iconic roles while secretly rocking a bump.

Claire Danes pregnant inHomeland

Claire Danes was pregnant with both her sons, Cyrus and Rowan, while filming the hit TV seriesHomeland.

"With Cyrus, I started [filming] in my second trimester. I was eight months pregnant when we finished," said Danes, according to USA Today.

"With Rowan, I was filming during the first and second trimester. So, I got it from both ends. I got the nausea and fatigue, and then the huge belly they had to digitally erase."

The actress even had to film love scenes while pregnant.

"As my baby progressed, the show got more action-packed. At one point, we were shooting in an old sewage factory. I was kidnapped, I was chained to a pipe, it was 4 a.m., I was seven and a half months pregnant, and I was like, 'This sucks,'" she told The Hollywood Reporter.

"I had to do love scenes pregnant. That was really unpleasant."

Thankfully Danes hard work paid off, and she ended up winning an Emmy Award for best actress while pregnant with Cyrus.

Hilary Duff pregnant inYounger

Hilary Duff was expecting her third child while filming the seventh and final season ofYounger.

In fact, the production was put on a tight schedule so filming could wrap before her daughter, Mae James Bair, was born in 2021.

"When I told her [Duff] we wanted to get back to work in October [2020], she said, 'That's great because I'm having a baby in March.' And I thought, 'Oh my god, we really have to stick to this schedule because otherwise, I don't know what we're going to do this season," the show's executive producer, Darren Star, told Entertainment Tonight.

"The baby was calling the shots. She gave us the right kind of pressure to make this season happen."

Not only did Duff have to film scenes while pregnant, she also had the added challenges of doing it during a pandemic.

"I was a little worried with the challenges of COVID and my pregnancy, but everything came together," she told Variety.

"I’m all for mask-wearing, but huffing-and-puffing on set in a mask at eight months pregnant was a challenge. Fitting into clothes that aren’t made for a pregnant body was not always the most comfortable or fun."

Kate Winslet pregnant inDivergent

Kate Winslet was five months pregnant when she played Jeanine Matthews in the 2014 filmDivergent.

If you look closely, you'll notice theMare of Easttownactress pretty much always had something in her hands to cover her bump.

"We had to be very strategic in the way that we shot her. She always had some sort of file or case in her hand that was sort of protecting, you know, her bump," director Neil Burger said on the film's audio commentary.

Winslet also spoke about the tricks used to hide her bump during an interview onThe Ellen DeGeneres Show.

"The number of takes where I'm, like, 'Guys, if I'm in profile, you gotta give me an iPad or something to hold. I mean, seriously."

"Every day we were just tweaking the costumes a little more and adjusting things."

Understandably, a body double was also brought in to perform the physical stunts.

Sarah Jessica Parker pregnant inSex and the City

Sarah Jessica Parker filmed season five ofSex and the Citywhile pregnant with her first child, and honestly the entire crew deserves a gold star cause we had no idea.

The costume department got creative with her clothes, dressing her character in lots of flowy dresses, while sneaky camera angles diverted the attention away from her bump. The season was also cut a little shorter than the rest (it went for eight episodes in total) so Parker could go on maternity leave.

Courteney Cox pregnant inFriends

If you're anything like us,Friendsis just one of those comfy series that you can watch again and again. But while you might be able to recall what happened in ALL of the episodes, ever, did you know that during the filming of the show, Monica Geller (played by Courteney Cox) was pregnant?

While the writers would've included her pregnancy in the story line, the entire season revolved around Chandler and Monica's inability to conceive a child... so they kinda couldn't. Instead, the show decided to camouflage the bump with coats, groceries and laundry baskets. Nailed it.

Debra Messing pregnant inWill & Grace

Debra Messing got pregnant in season six ofWill & Grace, but her character didn't. While most other shows got crafty when they couldn't tweak the script, tbh, the show didn't really do a whole lot to try to hide it.

Apart from a few tea towels and some large tables here and there, there wasn't a whole load of effort put in to trying to hide Messing's baby bump. She went on maternity leave in the eighth month of her pregnancy, and was written out of the season's final four episodes.

Gal Gadot pregnant inWonder Woman

Playing a superhero would be hard enough, but imagine trying to do it when you're five months pregnant!

In case you don't know, Gal Gadot is known for doing all her own stunts (especially in theFast & Furiousfranchise), so she wasn't about to do things differently when it came to her role as Diana Prince inWonder Woman.

During the final editing and reshoots, Gadot eventually had to wear a green cloth over her bump that would be removed during final editing. So sneaky.

Julia Louis-Dreyfus pregnant inSeinfeld

Julia Louis-Dreyfus wasn't just pregnant once but twice during the long-running comedySeinfeld. But thanks to her character Elaine's off-beat fashion styles, the show was able to conceal her baby bumps along with some handy camera work.

She toldVoguein an interview in 2019: "All this oversized clothing was very helpful to me as a pregnant person, both getting more and more pregnant and then becoming less and less pregnant after giving birth."