Superstar

wiktionary

ref

super- +‎  star

etymonline

ref

superstar (n.)

also super-star, by 1919 in the entertainment sense in reference to vaudevillian Gertrude Hoffmann (1883-1966), "the world's greatest show-woman;" by 1920 in sports (Babe Ruth), from super- + star (n.). It also was used around the same time by astronomers for exceptionally large stars.