31 weeks

All About BABIES
Your unborn babies' lungs continue to mature. Their skin, which has been wrinkled, now becomes pink and smooth as fat cells fill out their bodies.
Babies know your voice. Singing to them, talking to them, and telling them all about the world they'll be joining soon is a great way for you and your partner to bond with the twins—and each other!
Your babies' fingernails have grown and may even need a manicure after they're born.
How Big ARE BABIES?
Each unborn baby weighs around three pounds, eight ounces and stretches to around 11.2 inches (crown to rump).

As you can see, I've adjusted it a little bit this week to account for the TWINS! Everyone ELSE at this stage might be carrying around a 3lb. baby but I've got TWO!!