Retired tennis champ made sure wife Bec Hewitt was feeling the love, uploading this adorable throwback with their three kids and writing: "Happy Mother's Day to this amazing mum @bechewitt23 We love you so much! 💞😍 #TheBest 😘."
"Happy Mother's Day to all the spaghetti and cheese toasty eating mums out there. Nothing would be .. without you," Karl Stefanovic lovingly penned alongside this sweet snap of Jasmine tucking into her breakfast in bed with one-year-old Harper by her side.
"Happy Special First Mother's Day to my beautiful wife, best friend & most incredible loving Mother @julesrobinson82 from Ollie & I, we love you & thank you," MAFS star Cam Merchant beamed of his wife.
What a line-up! "My first Mother's day as a mum of six and I am so grateful for these gorgeous babies. They make my life so special. Happy Mother's day to all x," Lauren Newton shared with this photo of her beautiful brood.
Lauren's mum, Patti Newton, also took to social media to honour her daughter, "Happy Mother's Day to my darling daughter Lauren. Her six children and husband adore her as do Bert and I. We all love you ❤️❤️❤️❤️❤️❤️."
Home And Away star Lynne McGranger's daughter Clancy paid tribute to her mother with this touching post.
A reflective Lisa Curry, who tragically lost her oldest daughter Jaimi last year, posted this throwback photo of her three young children.
She captioned it: "The greatest gift... being a mother ❤️❤️❤️ 😞😥👼"
The I'm A Celeb star spent the day with her children, Jett and Morgan, and grandchildren, Taj and Flynn.
On a post on Instagram, she wrote: "To all our children, on earth and in heaven, you are our greatest achievements and our greatest loves. I am your mum and I love you with everything I have. Jaimi👼❤️Morgan❤️Jett ❤️," Lisa mused.
Kate Ritchie and her mini-me daughter Mae enjoyed a mother-daughter lunch with the pair dressing in coordinating floral looks for the outing.
"Mumma and her bubba.. With full tummies and fuller hearts.. 💕 #mothersday."
"I'm so glad she chose me. Because this.. Her.. It's everything.. ♥️♥️♥️ #mothersday2021," the former Home And Away actress confessed of her daughter Mae.
"Happy Mother's Day to all the brilliant, hardworking, kid carrying, bar raising, husband-putting-up-with-ing woman out there!! We salute you 👏💗🙏 @elsapatakyconfidential," Chris Hemsworth penned next to this never-before-seen photo of wife Elsa Pataky with their twin sons, Tristan and Sasha, and daughter India.
Teigan McKinnon, who recently welcomed twin girls, beams on her first Mother's Day as a mum of three!
"Mumma Bear to three ♥️," she captioned this family shot.
"Most of the time, we call her Mum. But us 5 kids and our 5 spouses commonly refer to her as "Crisis-Helen". Because no one is better in a crisis, than 'Crisis-Helen,'" Home And Away actress Penny McNamee explained of her mum alongside this beautiful photo from her wedding day.
Mums and daughters who lunch! The Bachelor's Anna Heinrich treated her mum and sister to a ladies' lunch at The Crown Sydney.
"Loved Mother's Day with my girls 💕 (even if Daisy was too busy to stop down for a photo)," Fifi Box shared.
Sylvia Jeffreys and Peter Stefanovic embrace their boys Oscar (L) and Henry (R) as they enjoy a Mother's Day lunch.
"Happy Mother's Day to the woman who makes us all better for just knowing her - the one we want to make proud everyday but who loves us regardless @tahynamacmanus the clan is strong," new father-of-three and Studio 10 host Tristan MacManus wrote in honour of his wife Tahyna.
"Happy Mother's Day Madre • You my dear are everything, your unconditional love, support and friendship means more than you will ever know. #theglue," Kyly Clarke reflected of her mum.
Bindi Irwin's husband Chandler Powell penned this moving tribute to his wife on her first Mother's Day: "Happy Mother's Day to my amazing wife❤️ This is your first Mother's Day yet it feels like you've been doing this forever. Grace and I are both lucky and grateful to have you in our lives. We love you so much."
Bindi also reflected on her new role as mother, explaining: "To my beautiful daughter, always know that you are loved beyond description."
Meanwhile Bindi unveiled two special effects family portraits - one with the late Steve Irwin holding his granddaughter...
"Thank you to 'The Monkey Brush' for bringing my family and Chandler's together in these stunning works of art. I wish we could all be together but sometimes life has other plans," the mother-of-one explained.
Ada Nicodemou rung in the special day with her son Johnas.
It's not Mother's Day without a handmade card and NZ Prime Minister Jacinda Ardern's daughter Neve absolutely nailed it.
"My heart ❤️ Happy Mother's Day to those lucky enough to be mums, and sending love to everyone who might find this day hard xxx," Doctor Doctor's Zoe Ventoura shared next to this black-and-white snap with her son Austin.
You can always count on Hamish Blake to find the perfect words to celebrate his wife, Zoe Foster Blake!
"Happy Mother's Day to the heart and soul of our unit, the Big Boss of our little family. We adore your incredible Mum Powers, your soft heart, and your firm opinions on when a member of the family needs their hair cut or beard trimmed. We feel like the luckiest kids in the world to have you beside us, lighting everything up by being you. xx Medium Boss, Little Boss and Baby Boss."
This article originally appeared on our sister site, Now To Love.