Can one buy shoes if necessary during the year of mourning?
According to many poskim, it is permitted to buy shoes during the year of mourning and it does not have to be worn by someone else beforehand.
Emes L’yackov Y:D 389, Yesodei Smachos pg. 145 in the name of R’ Moshe Feinstein zt”l, Divrei Sofrim (Kitzur) 37 ftnt. 46 in the name of R’ S. Z. Auerbach zt”l, The Laws of Aveilus pg. 114.