The trio hit up Maxwell's Dogs to grab some merchandise for Mason's dog Honey. Scott also shares a dachshund named Hersey with girlfriend Sofia Richie.
"Happy birthday @khloekardashian. You are the most beautiful human I have ever met inside and out. Thank you for being an amazing mommy to our princess True. She is blessed to have someone like you to look up to. I wish you nothing but more success and sending you positive blessing your way. Enjoy your day Koko ❤️," he captioned a photo of Khloe and their daughter.
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Fans recently freaked out after the Revenge Body star posted a quote to Instagram about "falling in love again." They assumed she was embarking on a new relationship and cautioned her against it.
"Girl ... don't fall in love again just yet, u need a minute, sit this one out!" one person wrote in the comments. "Please just don't let it be a basketball player. Please Koko," another added.
Leave your birthday messages for Khloe in the comments below!