Should i Act my own age?

I'm turning 15 and I some times use a "baby" voice and I watch alot of disney movies. I still color and bring my stuff animal around once in a while, i where alot of bright colors like kandii bracelets and hello kitty, dye my hair bright colors and I wear a panda hat. My parents think it's weird and my boyfriend thinks it's cute....soo ...am I weird xD? .....and should I give it all up and try and grow up?