The Rising Sign is our superficial social mask that we put on when meeting people or walking into a social situation where we are not entirely at ease. We hide behind thhe se behaviors until we DO feel at ease. Then we drop our mask.
Therefore, the Rising Sign indicates the "appearance" of our PERSONALITY.\
Not out body.
Yes, sometimes a person has ONE trait of their Rising Sign, or of the setting Sign, or of a Stellium, if they have a stellium in their chart.
For instance, my husband has Libra rising, and has the Libra cupid's-bow mouth . .but NOTHING else of his looks matches what Libra is supposed to look like.
I think the whole idea of the Rising sign indicating how you PHYSICALLY look is just a misinterpretation of it indicating how your PERSONALITY appears.