24 weeks

How your baby's growing:

Your baby's growing steadily, having gained about 4 ounces since last week. That puts him at just over a pound. Since he's almost a foot long (picture an ear of corn), he cuts a pretty lean figure at this point, but his body is filling out proportionally and he'll soon start to plump up. His brain is also growing quickly now, and his taste buds are continuing to develop. His lungs are developing "branches" of the respiratory "tree" as well as cells that produce surfactant, a substance that will help his air sacs inflate once he hits the outside world. His skin is still thin and translucent, but that will start to change soon.

Wondering what (and who) your baby will look like?  If you had a baby cam at 24 weeks pregnant, you'd almost be able to tell by now.  That beautiful face (though still tiny) is almost fully formed.  What's still missing from the picture is the fat that will be piled on under baby's skin.  Until those fat deposits are made, that very tender skin is still very transparent, which means a close look would let you see clear through to all the organs, bones, and blood vessels. Fortunately, that see-through look won't last much longer. Babies at this stage of fetal development are gaining about six ounces each week — with much of that gain coming from fat, in addition to growing organs, bones, and muscle.