Joy (special move)

From the Super Mario Wiki

Jolly Peach.

Peach using Joy.

Joy is one of Peach's vibes in Super Princess Peach. It allows Peach to float in the air and reach high platforms. However, in some areas of the game, she is unable to use it as she will be able to skip a puzzle in the level. It is used by touching the orange heart. The Joy Vibe is used to defeat certain enemies like Cloud Walls. There are sometimes paths that have various coins and crystals that lead to secret places. These paths are indicated by an arrow made of coins.