Spots and sweat appear Hormones can make you sweaty or spotty, but as long as you have good personal hygiene, you can still look and feel healthy. Growing taller You'll get taller, and this might happen quite quickly. If someone has commented that you are "all hands and feet," it's true! Once these sexual glands are activated, they begin to release their own hormones that result in physical changes throughout the body. Hair grows on your body Hair grows under your arms and around your vagina. An increase in hair on your arms and legs, in your armpits, and around your pubic area happens to girls early in puberty. These changes may be uncomfortable topics to discuss, but they're an inevitable part of growing up. Let's look at some of the changes girls can expect at puberty. You might have your first period, then not have another one for months. For most of us, this was an awkward time in our life. During a menstrual period, there are two to three days of heavier bleeding with two to four days of lighter flow. The discharge should be colourless or white, and shouldn't smell. Talk to your mom, older sister, or an aunt about buying a training bra. If you are self-conscious, you might want to start wearing a "training bra," which is a soft bra with no real support. Your doctor will check your height and weight each year to make sure you are growing properly. Your mom or other adult can purchase these products and show you how to use them. Periods start Your periods will start at some point during puberty.