Bowser Jr.'s Airship Armada
From Lumapedia
Bowser Jr.'s Airship Armada is the fifth and final accessible galaxy in the Kitchen.
This galaxy is a series of airships that Mario/Luigi can navigate between using cannons and moving platforms. After defeating Bowser Jr., the player collects a Grand Star that unlocks the Bedroom.
List of Stars
Routing Info
Bowser Jr.'s Airship Armada is accessible after the player has collected 23 stars.