Welcome to EBN!! My male is your typical bully shape. My female, Emma, while she weighs 50 you'd never know it. She's always been narrow but her upper back is more broad. The thing I've learned since having these bullies is that they come in so many different shapes, sizes and colors. My male, Wilson, didn't really start filling out until he was 1.5-2. Your girl jus may be more petite. She has a beautiful face and gorgeous ears.