It may just be that part of your hair is so curly that it may not show its length very easily. You could make sure to keep the less curly hair trimmed shorter so that it blended in with the curlier parts.

It could also be that your diet is imbalanced, or this is the result of a health issue. I'd go and get a health check-up and make sure everything is okay.

Super curly hair, when straightened over time, tends to look dull and stiff, and is hard to the touch and breaks easily, so straightening your hair would probably just introduce a whole nother set of problems.
3b/c?

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