Another candid post shows the model standing in front of the mirror with disposable underwear on.
"Raise your hand if you didn't know you'd be changing your own diapers too. After all these years in fashion I never could've guessed that disposable underwear would be my favourite piece of clothing but here we are!" she captioned the image.
"No one talks about the recovery and healing (yes, even the messy parts) new mums go through. I wanted to show you guys that it's not all rainbows and butterflies!"
If that wasn't enough to ensure new mothers don't feel alone, she later went on to share a video of herself on the way to work - breast pumping en route.
"Used to answer emails on my Uber rides, now I pump before my breasts explode," the 32-year-old wrote.
Kate Hudson, who was already a mother to two sons at the time, welcomed her first child with Danny Fujikawa in October 2018.
Two months after daughter Rani Rose was born, the actress shared a photograph of her postpartum body on Instagram alongside a candid message about getting back into a fitness routine after giving birth.
"The routine with our baby is getting more familiar and I'm ready to start taking a little time in the day focusing on myself. For me that means my health," she captioned the photograph of herself in her activewear.
"Why? Because I wanna be around a long time for these three kiddos of mine," she continued. "I know that some are curious about what that means and for all you mums (whether working or not working mums) it is the most challenging thing in the world to balance kids and personal time," she continued. "Let's be honest, kids take the number one position and it’s haaaaard to make the time for yourself."
Hudson then went on to reveal that she is trying to get her "strong mind and body back" through regular workouts, healthy recipes and mediation practices.
"I wanna do all this and keep up milk production, raise my kids, work everyday, make time for my man, have girlfriend time and stay sane!" the mother-of-three added.
After welcoming her first child with husband Adam Shulman in 2016, the mother-of-two shared an update on the reality of getting back to pre-baby weight (if that's what you wish to do).
In a powerful message to fellow mothers, the actress shared a photograph of her pre-bump jeans on Instagram which she decided to cut up after becoming a new mum.
"There is no shame in gaining weight during pregnancy (or ever)," she captioned the post. "There is no shame if it takes longer than you think it will to lose the weight (if you want to lose it at all)."
"There is no shame in finally breaking down and making your own jean shorts because last summer's are just too dang short for this summer's thighs."
Concluding the inspiring post, she added: "Bodies change. Bodies grow. Bodies shrink. It's all love (don't let anyone tell you otherwise)."
Chrissy Teigen isn't one to hide behind Instagram filters and shared an honest shot of her postpartum stomach after giving birth to her and John Legend's second child, Miles.
The model posted a clip of her stretchmarks on Twitter alongside the caption: "Mum bod alert!"
Further drilling home the message, she later tweeted: "Instagram is crazy. I think it's awesome people have killer bodies and are proud to show them off (I really do!) but I know how hard it can be to forget what (for lack of a better word) regular ol’ bodies look like when everyone looks bonkers amazing."
But Teigen didn't stop there, as the mother-of-two also joked about her "Asian Pear Underwear" with an Instagram post showcasing her mesh postpartum underwear.
Amy Schumer is one of the most down-to-earth celebrities on Instagram and the comedian has made it her duty to raise awareness of serious issues on the grid.
After welcoming her first child Gene with husband Chris Fischer, Schumer shared the realities of being a 'milf' on Instagram.
One of the very first photographs she shared of the newborn shows the new mother sat on the toilet in the background, alongside the caption: "Milf alert 1 o'clock."
A second photo series shows Schumer taking Gene for a stroll in the great outdoors - in nothing but her underwear.
Shining a light on the very real fact that new mums continue to wear pregnancy pants after giving birth, she wrote: "5 weeks. Hospital underwear for life!"
She later flashed her hospital underwear once more - this time, for the paparazzi.
"I'm really sorry if I offended anyone with my hospital underwear," she captioned the photograph. "Except I'm just kidding #csection #balmain."
Since giving birth to her first child, Alexis Olympia, the tennis champion has been honest about getting back into the sport.
Speaking about her postpartum body in an interview with Allure, Williams shared her refreshing outlook: "After I came out [of the hospital], I had a stomach but I thought, this is kind of cool. I have a stomach because the baby was there."
Updating followers on her journey into motherhood, she revealed back in March 2018 that she struggled to even walk as far as the letterbox.
"I will keep going forward and I'll get there," she wrote alongside a photograph of herself undertaking a physical challenge.
Fast-forward to July 2018 and the new mum made it to the Wimbledon 2018 Ladies' Singles Final.
When the American tennis player came second, Williams dedicated the award to fellow mothers as she declared: "I was really happy to get this far. For all the mums out there, I was playing for you today."
Just days after welcoming her first child with Orlando Bloom, daughter Daisy Dove Bloom, Perry took to Instagram to share a real and relatable look at her postpartum body.
Sharing the snap to her Instagram Stories, Perry's tongue-in-cheek photo showed the singer standing in front of a mirror in a nursing bra and underwear with the VMAs gif above her.
"Hair n makeup by @exhaustion," she wrote, cheekily playing on the way celebrities credit 'who they're wearing'.
Adding an extra layer of playfulness to the whole thing, her song "Not The End Of The World" could be heard playing over the top of the Story.
While not a selfie, Meghan Markle gained the praise of mums around the world after she decided to wear a dress that brought attention to her postpartum body (as opposed to wearing a flowing dress that would have hidden it).
The comments poured in on the family photo, posted on the Duke and Duchess of Sussex's official Instagram account. "I hope this makes people more aware that it’s normal to still look pregnant after giving birth. She looks gorgeous," wrote one person.
Others wrote, Meghan "actually showed [her bump] with pride and showed what it really looks like after birth," and noticed that she "isn't hiding away until she gets her figure back."