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This is what happens when five-year-old Sadie realises her baby brother Carson won't stay a bright-eyed, chubby-cheeked bundle of cute forever. Her reaction is is so sweet it made us want to cry, too.
Looking pretty adorable herself in a bright Princess Sophie dress, Sadie, from Phoenix, Arizona, wails, "Oh you are so cute!" and "I love your cute little smiles!" while hugging Carson.