The Wonderful Galaxy of Oz

'The Wonderful Galaxy of Oz' is a 1992 sci-fi anime adaptation of the 1900 L. Frank Baum novel The Wonderful Wizard of Oz. Originally released as Adventures in Space Oz, the 26-episode show was condensed into a film in English in 1996. The story was an updated retelling of the novel; young girl Dorothy and her dog are caught in a storm that sends them from their plant to the Galaxy of Oz. They and their friends Plantman, Chopper and Lionman must retrieve three crystals to free the galaxy of the evil witch Gloomhilda once and for all. Dorothy's suit throughout the anime is a balloon suit, allowing her to float in the air, which becomes useful in her adventures.

E1: Dorothy Runs into the World of Oz!/The Wonderful Galaxy of Oz (film)
Dorothy is chased by a robotic dinosaur controlled by Gloomhilda and is cornered on a cliff. She falls off but activates her balloon suit function to inflate her suit, allowing her to stay floating in the air.