A lot of us have seen the "fitspiration" images of petite, tan, intensely muscled young women with captions like "Yesterday you said tomorrow." This is just "thinspo" in disguise: the same crap that encouraged anorexia a few years ago.
Remember, it's unfair to constantly compare yourself to models, whether they're lanky or muscular. To really feel good, focus on YOUR progress and YOUR goals. Love your body, because whether petite, lanky, chubby, or athletic, your body is a miraculous creation!
Fitspo images were pioneered by Nike. Nike has an interest in making sure you feel obligated to buy more exercise gear. Think about it. Fitspo started as an AD CAMPAIGN! Don't try to purchase body confidence -- find it within!