Anne Hathaway's Ex-Casting Directors Deny Chemistry Reads on Their Sets

Anne Hathaway claims she once had to make out with 10 different men during a chemistry test -- but that didn't happen on two of her biggest movie hits ... TMZ has learned. Donna Morong -- the casting director for 'Princess Diaries' in 2001 -- tells TMZ … she's never participated in any auditions where two actors had to make out with their partners in order to test screen chemistry, something Anne says she had to…