Sanchez, 54 — whose billionaire fiancé Jeff Bezos, 60, has one of the world's most impressive property portfolios — took a nostalgic trip 'down memory lane' to her former hometown, where she held an event to celebrate the release of her new book, The Fly Who Flew to Space.

Lauren Sanchez shared a series of touching moments, including a special visit to her humble family home where she grew up. See photos.

Lauren Sanchez and billionaire fiancé Jeff Bezos boast one of the world’s most impressive property portfolios, with megamansions scattered across the U.S