Here's everything you need to know about Lauren Sánchez before she and billionaire Amazon founder Jeff Bezos head down the aisle.

While Bezos' name is synonymous with e-commerce empires, space technology companies and extreme wealth, his wife-to-be is perhaps lesser known but is no stranger to the spotlight.

Amid rainstorms and celebrity sightings, festivities are underway in Venice for the wedding of Jeff Bezos and Lauren Sanchez. After separate trips to space, a three-day wedding extravaganza in Venice is closer to home for the billionaire, who grew up in Houston, and his bride-to-be.