WATCH: Kate Middleton's Fairy Tale Portrait


ET's got a sneak peek of a new biographical profile of princess-to-be Kate Middleton that examines her journey from a rural upbringing in a working-class family to her fairy tale romance and engagement to Prince William

"Biography: Kate Middleton" -- premiering April 27 at 10 p.m. ET on BIO Channel -- also delves into the whirlwind that Kate's life became after she became involved with the prince and was stalked around the clock by paparazzi.

Watch the video to learn how her family's dogged determination led them from Britain's rural coal mines all the way to the House of Windsor.