Pahuteh,
The posuk in Tehilim 45:14 says “Kul kevodo bas melech penima, mimishbetzos zohov lvusho. This means “The prestige of the Jewish princess is her privacy – she stays within the confines of her home; she dresses (at home) in delightful clothes.” Note that this posuk, which refers to modesty of Bnos Yisroel, mentions two points: First, the tznua is predominantly at home, not in the public areas (see Rambam, Hilchos Ishus 13:11). Secondly, while at home she dresses delightfully. Although she is a great tznua, she nonetheless attaches importance to her appearance in the presence of her husband.