Streeeeeetch. Stretch marks, one of the more unsightly pregnancy side effects for many women, are shrouded in mystery. Women spend boatloads of money trying to prevent, treat, and rid themselves of markings, often with little or no effect. Knowledge is power when it comes to combating these insidious lines — do you know stretch mark fact from fiction? Take our quiz to find out.

The Good, the Bad and the Ugly: More Than You Ever Wanted to Know About Stretch Marks

Do all women get stretch marks during pregnancy?