Late in puberty, the hair will become thicker and curlier. Some girls decide to shave the hair under their arms. There are no health reasons to do so, but some girls simply prefer not to have underarm hair. It is up to you if you want to shave. Talk to your mom or another adult that you feel comfortable talking to about this.
Most girls have a growth spurt the year before they get their menstrual period.
Your feet and hands will usually be the first parts to grow, and then the rest of your body will follow. After you get your first period, you will grow more slowly. But you will probably grow about another 1 or 2 inches after your first period. During puberty, your hips will get wider as your waist gets smaller. You will develop a healthy, curvy shape.