We can't resist this video of five-year-old Sadie when it dawns on her that her younger sibling won't stay little!
Wearing a lilac princess dress, the cute tot looks devastated as she cries: "I don't want him to grow up!", before leaning in to kiss her sibling and gushing: "Oh, you are so cute, I love your cute little smiles."
Unfazed by the drama, her adorable brother seems to be finding the whole thing rather hilarious – just look at his cheeky grin!
If that's not enough, a gutted Sadie also wails: "And I don't wana die when I'm a hundred!" Aww!
This is pretty much the sweetest thing we've seen in ages.
Check out the video below:
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