Mini texture showing on skin of sim in new mesh?

Hi again!

I've done some searching for this but can't find anything, so just wondering if others have experienced it. My new mesh works fine and the texture is fine, but... A mini texture shows also on the sims skin? For example, if I have textured a dress mesh blue with spots, it will work fine but a small dress will also appear on the sim's skin. 

Thanks so much in advance for any help!