"Mum tum" or crepey/loose skin on the tummy is from post pregnancy and is a very common and normal side effect. During pregnancy, the skin stretches to accommodate a growing bump. As a result, many women find that the skin around their stomach is loose after giving birth.  How quickly the skin returns to normal after delivery can depend on many factors, including the woman’s weight, age, genetics and also how many pregnancies she has had.

Crepey/loose skin can also occur after rapid weight gain and loss and can also be found on the arms, elbows, knees and chest area.