Stacey Solomon Braces for Waterworks as Son Hits 18!

Heartstrings alert! Stacey Solomon is gearing up for a torrent of tears as her eldest, Zachary, is on the brink of adulthood. Hitting the big 1-8 on March 21st, Stacey confessed to radio wizard Scott Mills she's set for a weepy birthday bash. 'Really sad' is the mood du jour as she faces the music: her lil' boy is all grown up. 'An 18-year-old? Can you believe it? I'm going to cry all day,' she spilled on BBC Radio 2. It's a reality check for the 'Sort Your Life Out' star, who still can't fathom she's mom to a 'fully-grown adult human son.' Flashback to 17 years ago, a young Stacey juggled nappy changes with 'The X Factor' auditions, and now the tears of pride are real. This supermom's journey from teen motherhood to a bustling brood of five has had its share of side-eye, but she's flipping the script with her candid Insta-confessions. Her Mother's Day post? A clapback at the haters and a virtual hug to her troop of munchkins. Plus, a recent Swiss ski escapade shows Zach's daredevil stunts and little Belle's slope skills, making memories to last long after the birthday balloons deflate. Keep the tissues handy, Stacey, and here's to Zachary's adulting adventures!