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It's official: Chrissy Teigen and John Legend [3]'s kids seriously cannot get any cuter. The 33-year-old mom of two shared an adorable video of Luna playing with her 8-month-old brother Miles [4] — who, yes, was clad in a cranial helmet to fix the flat part of his head [5] — and we wish we were invited. Chrissy captioned the photo "finally playing together!!" and it looks like Luna is taking her job as a big sister pretty dang seriously. The 2-year-old gets extra props if she's sporting a Rapunzel dress — she's far and away one of the best Disney princesses!