27 Weeks

For a baby, it's time to trade in the old crown-to-rump measurement for a new head-to-toe standard. So what are your baby’s stats this week (which, coincidentally, is the end of the second trimester)? Fifteen inches — more than a foot long — and triple (or even quadruple) what it was in week 12. His weight is creeping up the charts as well, coming in at just over two pounds. More big news: Your baby may recognize your voice by now, so feel free to serenade your belly (start learning those lullabies!).