Yes, you can lose inches off your body without losing weight due to a process called body recomposition (5). This process involves losing fat while simultaneously building muscle, which results in a leaner and more toned appearance, even without significant weight loss.
Muscle is significantly more dense than fat, which means that the same volume of muscle will weigh more than the same volume of fat. It is also more compact and takes up less space in the body. This is why someone can appear slimmer and more toned with a higher muscle mass, even if their weight has not changed.