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"My heart doubled in size and it's all because of you. You will forever be little baby, my 'bubby,' " Farley captioned an Instagram photo gallery to mark her baby boy's big day. "Happy birthday Greyson."
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"It's at this place called The Blast Zone and they have the big trampolines and the foam pit and the kids can just run around," The Hills alum told PEOPLE.
On his big day, Cavallari shared an oceanside photo of her little guy, captioning it, "Happy 3rd birthday to my wild child, Jaxon. You brighten up our lives little man 💙."
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"Happy 13th birthday, you gorgeous human," Paltrow captioned a photo of Apple on her big day — which falls, appropriately, on Mother's Day this year.
"You light up every room, my heart, the world. You. Are. Everything. I love you, schnapps. #🍎"
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"Happy 3rd birthday to my big girl," the proud mom captioned a beachside Instagram photo.
"I remember holding her in my arms right now in the hospital. She's a free spirit just like me n I'm so proud of her. 🎂"
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Future Zahir has a lot to celebrate on May 19 — he turns 3!
The son of Ciara and rapper Future celebrated the milestone over his birthday weekend with a Hotel Transylvania 2-themed bash, complete with face painting, balloon motorcycles and a three-tier themed cake.
"Surrounded By So Much Love! We Love You Sooo Much. #Birthday Love. 🎈❤️🎂" the singer — who welcomed daughter Sienna Princess with husband Russell Wilson on April 28 — captioned a video of party guests singing "Happy Birthday" to her older child.
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"Emme Jay, 4 years ago today you changed our world forever," Garcia Swisher captioned an adorable photo set. "Our hearts are so full with pride as we watch you grow into the sweetest, wildest, hilarious, and most fun princess rockstar ever."
She adds, "Your daddy and I love you more than you will ever know and we can't wait to see what year FOUR brings your way. ❤️❤️❤️❤️"
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"Happy Birthday to my little man," wrote the actor, who is currently expecting his second child with wife Kelsey.
"What they say is true, it goes sooooo fast. We love you, #BigBoyMcCoy!!!"
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"To My Youngest and Most Rambunctious! We named you Cadence because the flow, rhythm of events, and patterns in which you make us experience life with you are unmatched and unprecedented!" the rapper captioned an Instagram snap of himself and his little girl.
"I love you with all I have to GIVE and I Thank GOD for you. Here's to the Wonderful 2's! HAPPY BIRTHDAY 🎁🙏🏾 #daddyslittlegirl," he added.
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Kimora Lee Simmons' older son Kenzo Lee turns 8 on May 30, and the proud mom of four used Instagram to share a photo from his party — including a huge three-tier cake that looked almost as tall as the birthday boy.
"Happy Birthday Young Sir!! We love you so much! You make us all super proud! Have a great day a week early!" Simmons captioned the memorable moment.
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JUSTICE "JJ" ACKLES
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Presley Bowie — the baby girl of Jackson Rathbone and wife Sheila Hafsadi — celebrated turning 1 on May 31 in a variety of dresses and an adorable flower crown, alongside her parents and big brother Monroe Jackson VI, 4½.
"Love being a dad to a beautiful little girl. Terrified of the teenage years... Stay a baby forever!" Rathbone captioned a series of Instagram snaps from Presley's party.
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