Chrissie is also used as a diminutive of Christiana, Christopher, Christian, Christmas, Chreistos, Christos, Christ, etc. Chrissy is also used as a masculine name in English, as a diminutive of Christopher, Christian, Christmas, Chreistos, Christos, Christ, etc. So, I think that the "Gender" of this name should be updated from "Feminine" to "Feminine & Masculine".Source: https://en.m.wikipedia.org/wiki/Chrissy
Source: https://en.m.wikipedia.org/wiki/Chrissy