The average age that girls start menstruating is 12, but that can vary by a lot, so don't worry if you start yours earlier or later.
They may compare themselves with others who have developed more and who need to wear bras or those who are menstruating.
Furthermore, it is not wise to shop for swimwear after a meal or while menstruating, both of which could affect the suit's fit.
Early adolescence in particular is a time of increased nutritional requirements for girls, who experience their greatest growth spurt at this time and also begin menstruating.
Approximately 75 percent of all menstruating women experience some symptoms that occur before or during menstruation.