The 3rd season of PriPara.

One day, a huge UFO appeared in the sky above the town of Parajuku, and glittering jewels sprinkled down from the sky. Now it's been decided that the Idol God Grand Prix will take place at Parajuku’s PriPara and the PriPara system has been updated. Around this time, Laala meets a mysterious baby that fell from the sky. This baby calls Laala ‘Mama’ and refuses to leave her side, so Laala ends up taking care of the child, but what will happen now?!

(Source: Honey's Anime)