Lauren Sánchez Bezos shares emotional Instagram posts about dropping off her son Evan at the University of Miami, reflecting on 18 years of motherhood milestones.

It's been a summer of major life milestones for Lauren Sanchez Bezos, who began the season by tying the knot with billionaire Jeff Bezos —and she is closing it out by bidding farewell to her son, Evan Whitesell, who has left the family home to start his freshman year at college.