I often got asked if I am a CNA when I did agency, until the other nurses knew me.
I became a LPN at 19 years old, and I will be an RN at 29 years old. I too, look very young. I have tried everything from more professional uniforms, to shorter hair, everything.
I take it as a compliment, because I'll hopefully look 25 when I'm 45...
However, I always have my badge visible that clearly states my title. Not too many people do that, I don't know why. I was always proud of my license, as a LPN now, and I will be proud as a RN as well.
I love when patients used to ask me how many times I've hung an IV, or anything else. They always look shocked when they find out how long I've been a nurse and how old I really am. Most people think I am somewhere between 18 and 25. When I was first a nurse, I looked much younger, around 16 or so. Just show confidence, and be glad people think you are so young!!!