Look who's reached single digits!
But while everyone else in her family will be far more aware of the momentous occasion than she is, that doesn't mean the newly year-old tot shouldn't be feted to the fullest!
"Happy 1st birthday to my sweet princess. One of my living angels," auntie Khloé Kardashian Odom wrote on Instagram along with a pic of herself making a kissy face at a supercute yet skeptical-looking Penelope.
No word yet on how the family plans to celebrate, but surely they'll think of something appropriately festive. And, considering the birthday girl's penchant for fashionable headwear, we're thinking it'll involve hats!
In the meantime, think of how much has happened to the Kardashians' sprawling family in just 12 months.
For starters, Penelope's big brother, Mason Dash Disick, is now 3 and quite the little man. And, in case you hadn't heard, auntie Kim Kardashian gave birth to Mason and Penelope's cousin North West a few weeks ago!
The birthday girl was most recently spotted a couple weeks ago with mom and her brother enjoying a beach day with friends in Malibu (and yes, she was wearing an adorable hat).
In honor of Penelope turning the big 1, here's a look at the best of her family pics with mom, dad and Mason!
Plus, tune into a new episode of Keeping Up With the Kardashians this Sunday at 9 p.m., only on E!
UPDATE: Auntie Kim weighed in later that night, tweeting: "Hope my little Peep had the best 1st birthday today."