Here's Princess Shirahoshi's first blimp form - Regular Blimp.

In my story, when Shirahoshi was inflating for the first time, her reaction is both shocked and literally scared. But after she saw the horizon of the ocean, Shirahoshi was amazed and thinks how exciting it felt when she was inflated and floats in the sky without a bubble from her Bubbly Coral around her waist.

All the feeling being inflated and floats in the sky feels like freely, after she's getting used to it.

In case you're wondering, Shirahoshi was inflated by Aqua's Blimp Pearl's powers.

Shirahoshi; One Piece Character © Oda Eiichiro, Shōnen Jump, Crunchyroll, LLC, and Toei Animation