Though fat will form fast during the late trimester, it is actually around week 17 when early fat tissues begin to deposit right under the skin. Eventually, these will help make your little pear look more baby-like!

But for this week, the role of early fat deposits is to help define the fine features that your baby possesses. Also remember that fats will eventually replace lanugo in regulating the body’s temperature, so the early fat tissues are now starting to practice their crucial role.

These fat tissues also help in regulating your baby’s metabolism, which in turn promotes proper growth and development of all the body systems. Fat development may not be fast at this point, but they will soon catch up!