Cute~ I don't think Mizuki and Ena would have pups, so whenever Mizuki wants to design something for little girls she uses Rui and Tsukasa's little girl as a model. She is cute like a little doll, and Mizuki loves her to death. Ruitsuka's little pup loves her too, she loves getting her hair done by her auntie Mizuki, same as her nails. Mizuki and Saki would have play dates with her to play princesses and do little tea parties together, Emu joins too. I think Rui and Tsukasa want to participate too, but it's a girls only thing so Mizuki doesn't let them ꉂ (´∀｀)ʱªʱªʱª.

While prom and homecoming doesn't exist outside the US (I have only see those things in movies lol), I agree that Mizuki would love to make her dresses! I think Rui and Tsukasa would do their best to keep their kids away from the spot light, but if they were to attend some red carpet together as a family, Mizuki would insist in them letting her design clothes for everyone ♡⸜(˃ ᵕ ˂ )⸝