Holiness:
After​ we are saved from sin, we are commanded "Go, and sin no more" (John 8:11) For the grace of God that bringeth salvation hath appeared to all men, Teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly, in this present world. (Titus 2:11 - 13)
Contending For Modesty
We must present ourselves as holy unto God (Romans 12:1), and separate ourselves from all worldliness.( James 4:4)The Bible instructs us to wear modest clothing, Adam and Eve covered themselves with fig leaves after they sinned, but God found their efforts inadequate. God made clothing for them of coats of skins.(Genesis 3:7 )and (Genesis 3:21) God instructed Israel's high priest to wear "holy garments" for he represented a holy God.(Exodus 28:6). If we are to honor God in our hearts, it is consistent to honor him with our outward dedication to him. (Deuteronomy 22:5) tells us the woman shall not wear that which pertaineth unto a man, neither shall a man put on a woman's garment: for all that do so are abomination unto the Lord thy God.
Proverbs 7:10 speaks of a woman with " the attire of an harlot.
( I Timothy 2:9-10) In like manner also, that women adorn themselves in modest apparel, with shamefacedness and sobriety; not with broided hair, or gold, or pearls, or costly array; But (which becometh women professing godliness) with good works.
Jesus Christ wants his people to reflect his holiness. (I Peter 1:16) Because it is written, Be ye holy; for I am holy.