How many letters does the top answer for “author of a star is born” have?

The most common answer is streisand (9 letters).

Crossword clue: author of a star is born

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

streisand 9 letters wd-fact-v3

United States singer and actress (born in 1942)

author of double star 50% similar → heinlein

author of star maker 50% similar → stapledon

author of star trek 50% similar → roddenberry

author of star wars 50% similar → hamill, lucas

author of the star rover 50% similar → london

composer of a star is born 50% similar → streisand

director of a star is born 50% similar → streisand

wrote a star is born 50% similar → streisand