Float Star

Float Stars make their debut in Super Mario Galaxy 3 - Neverending Galaxies. It transforms Mario or Luigi into Float Mario/Luigi. This makes them float for a short period of time. The Float Stars look like Rainbow Stars, but are completley light-blue.

Trivia

 * Float stars are the second type of fan-fiction stars to join the catgeory of star power-ups.
 * If you count the Rainbow Stars, Float stars are the third kind of stars to join the category of star power-ups.