Q. I bought a new suit before Pesach but could not use it then, since it was only shatnez tested after Pesach. Can I wear it for Shabbat during sefirah and say Shehecheyanu?

A. Mishna Berura (493: 2) and Kaf Hachaim (ibid.) rule that if someone came across an item on which normally we recite shehecheyanu, he should recite so during sefira. Other Poiskim however, mention different minhogim and opinions, and maintain that the common tradition is not to recite this brocho; some recommend doing so on Shabbos (Leket hayosher p.97, Dover Meshorim 26.)

Horav Shlomo Miller’s Shlit”a opinion is that definitely on Shabbos he is permitted to wear the suit and recite shehecheyanu.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a