The singer told The Oprah Winfrey Show that a woman's body is remarkable in the way that it can bounce back from a pregnancy.
Aguilera said: "I think as women, our bodies go through such amazing things, and we are superhuman. We give life, we give birth, we are our child's source of everything. Our bodies are not our own for a time period, and we givingly and willingly do so for our child.
"But then when we get them back, you feel that much stronger and that much better and more confident. Sure, I have a difference in my body than before, but I'm more confident in that."
Aguilera is scheduled to perform at the 2010 MTV Movie Awards.
