If you are looking for information related to body image, health, or navigating social media safely, the following resources may be helpful:
For practical tips on skin care and self-care for teenagers, wikiHow's guide for teenage girls covers foundational habits. Young People, Body Image and Social Media
During puberty (typically between ages 10 and 14), it is medically normal for many teens to experience significant physical changes, including gaining weight and developing a more adult body shape.
To understand what is normal during puberty, organizations like Children's Minnesota provide guidance on growth and metabolism.