Stretch marks often show up on places like your breasts, thighs, hips, and butt. Most girls and women have stretch marks, so if you have them, you're not alone. At first, stretch marks may show up as reddish or purplish lines, but they often will turn lighter (whitish or flesh-colored

Although they're more common in girls, guys can get stretch marks, too. Guys and girls who are body builders are more prone to getting them because of the rapid body changes that body building can produce. Obesity can also lead to stretch marks. Stretch marks are also more likely to occur if a person uses steroid-containing (such as hydrocortisone) creams or ointments on their skin for a long time (more than a few weeks).