Can I become an actress without experience?

It's always been my dream since i was little to be on disney and have movies and i think it would be a good time to look for casting calls since disney is making more shows staring kids my age. I am a good actress, determined have the "looks" but never taken any classes, theater, or acting camps. I think I have what it takes to be an actress but I'm not sure if anyone would take me seriously because i don't have experience. Any one have any help or suggestions.