"Happy birthday, Saint! I can't believe how quickly time flies!" Khloe wrote on her website. "Watching my little Saint grow up this past year has been amazing. He's seriously such an angel and could not be more adorable. What a light he's been for our family!"
"Happy birthday to our sweet angel, Saint! #family #love #happybirthdaysaint #saintwest," Kris added on Instagram.
Kim herself has kept off social media since she was robbed at gunpoint Oct. 2 in Paris, but allowed longtime friend Jonathan Cheban to share new photos of Saint on her website.
Jonathan will be posting on the site all this week.
"I can't believe today is Saint's first birthday! One thing people may not know about me is that I'm obsessed with babies," he wrote.
"In honor of his birthday, I convinced Kim to let me share some never-before-seen pics! Happy birthday, Saint!"
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Kim shares Saint and 3-year-old daughter North West with husband Kanye West, who was released from the hospital Nov. 30 after more than a weeklong stay for exhaustion.
Sources recently told Page Six the couple will call off the rest of their engagements this year to focus on their family.
"[They] plan on taking the rest of 2016 off and spending time as a family," an insider said. "[Kanye is] stable -- but needs time to come back."
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