I had a baby in February and we took our baby to a shrine when she was about a month old. This is called Omiyamairi, literally meaning "a visit to a shrine", Omiyamairi is a Shinto ritual. We present the news of the birth to the guardian spirit of the shrine, and offered thanks.
The baby is worn a special white clothes for the ceremony, and have a special kimono draped over them.
Kimono is too big to her, Kimono is supposed to be wear when she becomes 3 years old on the day of festival for children of three.
She looks like a Clione....
The next event for her will be Okuizome.