Precautions: Infant, Desitin

Baby Shower Registry Question...

Hi, I registered for my baby shower and I put some necessity clothing down. Pull over undershirts, bodysuits, side-snap undershirts, kimonos/gowns, footed-sleepers, etc. My question is: What sizes should I request? People have told me that almost everyone will by clothing regardless of if I have it on my list or not, but they told me that most everyone gets infant size. Any suggestions would be greatly appreciated. Thanks, T.