Baby clothing sizes

Anny • Wesley Dean 💙👶🏽 12-03-2016
Hi ladies :) 
I'm due December 9th and I've already started buying baby clothes. Mainly newborn and size 0-3 months. However I have been seeing so many cute things in the size 4-6 months but my mom keeps saying that I shouldn't buy in that size yet because I won't know how big baby will be and when he will actually fit in those clothes. Which sizes are you ladies gonna buy or which ones did you buy already?