Kim K shared some adorable pics of these BFFs and our hearts melted

Little Penelope Disick celebrated her third birthday on Wednesday, and we're still taking in the adorableness of the whole event.

As well as an all-day party in Disneyland with her mum Kourtney, brother Mason, aunt Kim, grandma Kris and cousin North, the birthday girl also got a few birthday messages via Instagram too. And when your aunt just so happens to have 40.2m followers, that seems like a pretty cool gift to us.

Last night Kim shared some gorgeous pictures, calling Penelope the "best big cousin" to two-year-old North. "These wild ladies always help each other," she wrote posting some never-seen-before snaps of the two toddlers together. Like this one, which has us feeling ready to snuggle up in bed:

And this snap of the two hugging after North had a "boo boo" on her knee:

And, of course, this snap of the two "ballerina buddies":

These two. We can't cope. Penny's mum Kourtney posted a few snaps of her little one's Disney party, writing "You forever changed my life and my heart and teach me so much everyday. Happy birthday my tinkerbell angel"

So cute. She also thanked KIm "for hanging with my crazy Disney obsessed self for 12 hours of major madness."

Looks like it was a fun day!