Summary

Yosef Karo Shulchan Aruch — Yoreh Deah 340

And in these nations, it is not customary to act thusly. Rather, we do not tear a garment made of linen, which is “sweat clothing,” and not the uppermost coverall. But all other clothing, tear for the sake of his father and mother, and for other deaths, the top clothing under the coverall.
Source: Wikisource

Yosef Karo Shulchan Aruch — Yoreh Deah 340

And women immediately stitch unevenly because of their honor.
HGH: And all times that it is forbidden to stitch unevenly, even to bind the top of the tear with a needle, it is forbidden. And there are places which behaved stringently, even on account of other deaths, which do not stitch partially within thirty days, and then even the top of the tear is forbidden to bind with a needle.
Source: Wikisource

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