Calendar* Alert: Movie "The Girl Can't Help It"

Several websites claim that the movie The Girl Can't Help It, with Fats Domino, Little Richard and Gene Vincent, premiered in Hollywood, California on August 22, 1956.  We can find no reliable source that confirms this information.  Nearly every movie website which publishes the date of opening says it opened on December 1 of that year.  We find it difficult to believe that a movie which opened nationally on December 1 would premiere over three months in advance, and have dropped the item from our Calendar* until a reputable source publishes a premiere earlier than December 1.