Popsugar Parenting Pregnancy How Big Is My Baby? A Week-by-Week Fetus-Size Guide Based on Objects You Actually Know 8 June 2018 by Annie Gabillet View On One Page Photo 21 of 36 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 21 Week 25: a Bottle of Champagne Have a nice bottle of champagne you're saving to celebrate childbirth in a few months? It's about as tall as your baby, 13.62 inches. Previous Next Start Slideshow Pregnancy