Jeff Bezos is officially 60 years old, and with the help of his fiance, Lauren Sanchez, who wore a $4,995 crystal-covered rocket ship purse, he had a huge celebration on Saturday. The Amazon founder, whose official birthday was on January 12, had a star-studded guest list filled with Hollywood A-listers, athletes, and business moguls.A post shared by Lauren Sanchez (@laurenwsanchez)According to Page Six, the party was at Bezos and Sanchez’s Beverly Hills mansion.