Some yorkies take a little time to get used to wearing clothes,and others just dont get used to it at all..they hate it.
I have two females,Lady (15 months old and 2lbs) loves her cothes,infact,she apreciates them when its cold..it didnt take her long to get used to wearing them so I am able to dress her up and enjoy
BUt Jessie (10 months and almost 9lbs) will NOT wear anything! We have tried getting her used to the whole procedure just like we did with Lady,but she hasnt got used to it and weve realised that it stresses her out and upsets her..so basicly we leave her alone and respect that she is just not that kind of yorkie.She also refuses to wear bows or anything in her hair.
Some yorkies end up enjoying being dressed and the attention they get from it,and others just dont..it all depends on the yorkie