These are the relevant words of the Tur in Siman Ayin Gimmel. Just prior to these words he is discussing what the husband is obligated to give his wife (clothing, household needs) and then discusses the difference betwene an ani and ashir. He then writes why it is important for his wife to have the appropriate attire to go out (I hope the copy and paste comes out clean and readable)….
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I am not a posek by any stretch of the imagination. How to practically understand the words of the Tur, consult your Rav. On the one hand he says clearly there are legitimate needs for a woman to go out and even makes the statement she is not in prison, yet he continues that she should not be accustomed to going out often. The nosei keilim (both the Prisha and Beis Yosef) attribute the comments of the Tur to various midrashim and perhaps gemaras as well (its not clear to me).