It's a day set aside for people to pay tribute to fathers and all that they do for their children.
And this Father's Day, celebrities such as Megan Gale, Erin Molan and Braith Anasta were among those sharing touching posts on Instagram to mark the occasion.
Throwback photos, family shots and gushing words all appeared, with the stars not holding back with their gratitude on Sunday.
'Words can't describe how much I love you': Rebecca Judd, Megan Gale, Jasmine Yarbrough, Erin Molan and Braith Anasta lead the stars sharing touching tributes for Father's Day (Pictured: Shaun Hampson)
Model Megan Gale gushed over her AFL star partner Shaun Hampson, who is father to their two children River, four, and Rosie, 11 months.
'WE ARE SO LUCKY. Happy Fathers Day to the best,' Megan wrote alongside a picture of Shaun cradling a newborn baby.
Lindy Rama-Ellis (formerly known as Lindy Klim) also got in on the action, sharing a photo of her new husband Adam with their baby daughter Goldie in his arms.
'HAPPY FATHERS DAY [Adam] Thank you for being the most incredible father. We love you!!' the Balinese princess captioned the snap.
'Thank you for being the most incredible father. We love you': Lindy Rama-Ellis (formerly known as Lindy Klim) also got in on the action, sharing a photo of her new husband Adam with their daughter Goldie in his arms
Family affair: Rebecca Judd uploaded an image of husband Chris in bed with their four kids: Billie, Oscar, Tom and Darcy
It was a family affair for AFL WAG Rebecca Judd, who uploaded an image of her husband Chris in bed surrounded by the couple's four kids Billie, Oscar, Tom and Darcy.
'Our King and his pancake stack...' the brunette Beauty wrote.
Karl Stefanovic's fiancée Jasmine Yarbrough shared a blast from the past with an image of herself as child gripping a doll as her dad beamed beside her.
'Happy Fathers Day Daddy! Words can’t describe how much I love you,' Jasmine wrote.
Throwback! Jasmine Yarbrough paid tribute to her dad with a childhood photo
Getting a workout! Tiffiny Hall shared footage of herself and partner Ed Kavalee doing push-ups above their son Arnold
Getting active in her Instagram post was The Biggest Loser's