Recently a cousin came over for the weekend. When we gave her breakfast, she only had a slice of bread and said that she was full, when my mum offered her more food she said that she usually doesn't eat breakfast. She is 5'4 and has the weight of 42 kgs/ 92 pounds. She's very thin and has no muscle mass. I'm 14 and she's 19. I know that she's not healthy but I still feel like I'm a little fat for my age. I am going to the gym, but it's my first month. I'm shorter than most classmates and I feel insecure about this. Am I fat? My worst nightmare is to be short and fat. I really want to look petite but lean at the same time. Its irrational but i feel REALLY far after I got to know her weight. I was 46 kgs in April. ( 101 pounds) have I gained too much in less time? ( I will post a picture soon)