RCK says the famous legend about the fellow who had a hard time finding his daughter a shidduch, came to the Steipler, who asked him if he made a kiddush when the daughter was born, etc. is "sheker." And that he himself did not make kiddushim for most of his daughters.
My Belzer chevrusa (we learn "Sidduro shel Shabbos" together) told me, however, that they say over the same ma'aseh concerning the previous Belzer Rebbe. More tzugepast.