This depends on the holster manufacturer, style and model of holster. Many of the regular holsters will fit the 226-225 & 220 Sig. But once again it depends on the style of holster from the manufacturer. If you Google P-225 Sig Holster. The first couple of sites listed have holsters pictured and they will each advise what they fit including your P225.
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
ďAmericans have the right and advantage of being armed. Unlike the people of other countries, whose leaders are afraid to trust them with arms.Ē
James Madison. Author of the 2nd Amendment