Though, there may be some discrepancy about what her official first word is.
"I feel like she already said her first word, which is 'hi,'" Legend told ET in January. "Because I feel like she's aware shes saying it, and she waves when she says it, so I feel like that's her first official word."
Either way, she's an amazing little talker!
That wasn't the only first for the famous daughter, either. Teigen shared another pic of Luna with a bow in her hair, writing, "First bow."