(DAILY MAIL) Caitlyn Jenner's transition from Bruce has been the most high-profile the world has ever seen.
From the dramatic television interview with Diane Sawyer in which Jenner revealed herself for the first time, to the series of appearances in which she has been hailed as an inspirational figure, billions now know that Bruce Jenner has become Caitlyn.
But behind the scenes, I can reveal, is a far more subtle process - and one, multiple sources have told me, with which Caitlyn is struggling.
Her doubts center not on her identity as a woman, but her devout Christian beliefs about sexuality.
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