The pics are bavust and mefursam. The old Chaim Berlin yearbooks have pictures of Rav Hutner in a grey suit and a mustache. Many of these pictures are available in the Atrscroll book “Tha Mashgiach”, about Rav Meir Chadash ZT”L.
I once heard from Rabbi Drillman about a certain gadol (I believe it was Rav Chaim Shmulevitz, if someone who is close to him can ask him to confirm I would appreciate it)who used to give a shiur dressed rather snazzily. A chassidishe bochur complained to the rosh hayeshiva, whereupon the rosh Hayeshiva told him that iluyim are allowed to dress how they want. Many years later, the chassidhse bochur, now an older man, met with this gadol in Eretz Yisroel. the gadol remembered the bochur from years back, and told him, in yiddish, “I look different now, no?”