The reason why people were confused about Hathaway's religious beliefs was that she collaborated closely with Latter-day Saint circles because of her role in "The Other Side of Heaven", based on the true story about Elder John H. Groberg, who served a mission in Tonga for three years while his beloved Jean (Hathaway) awaited his return. The Grobergs went on to become leaders in "The Church of Jesus Christ of Latter-day Saints".
Hathaway, 30, along with costar Christopher Gorham, worked with the Grobergs in bringing their story to the screen. In the next few years Hathaway made an impact to mormon cycles and gained huge popularity among Mormons by starring in several family-friendly hits, including "Ella Enchanted" and "The Princess Diaries" films.
However, Hathaway changed her mind when she learned at the age of 15 that her brother, Michael, was gay. Anne was quoted as saying: "I realized my older brother was gay, and I couldn't support a religion that didn't support my brother. Now I call myself a nondenominational Christian, because I haven't found the religion for me." In 2009, Hathaway revealed that her religious beliefs are "a work in progress".
Conclusion: Anne Hathaway is not mormon because she is not a member of the Church of Jesus Christ of Latter-day Saints (the "Mormon" church).
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