How many letters does the top answer for “author of the princess and the frog” have?

The most common answer is winfrey (7 letters).

Crossword clue: author of the princess and the frog

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

winfrey 7 letters wd-fact-v3

author of princess knight 50% similar → tezuka

author of the princess and the pea 50% similar → andersen

author of the princess diaries 50% similar → cabot

wrote the princess and the frog 50% similar → winfrey