Medically reviewed by Andrea L. Braden, MDMedically reviewed by Andrea L. Braden, MD If you've noticed that the appearance of your belly button has changed during pregnancy, you're not alone ...

For most women, a pregnant belly is a miracle to celebrate — but not necessarily an open invitation to touch. Etiquette experts and mothers weigh in on the topic.

An "outie" belly button may be an indication of this ailment. Obese or pregnant women may also develop this kind of belly button.

This orangutan had a beautiful moment with a pregnant woman at Colchester Zoo. A beautiful moment showing an orangutan gazing at a pregnant woman's belly was captured at Colchester Zoo in England.