Matthew West recently released a hilarious song entitled Modesty is hottest. The message is to dress modestly but the video is humorous and satirical. It received so much criticism from both Christians and non-christians alike that the official video was removed from YouTube. You don't have to wear turtle necks but you also don't want to dress like a prostitute. Men and boys have to be accountable for their thoughts and actions but women and girls need to question their motives when they get dressed. If you are dressing to look sexy then you are not helping you Christian brothers to stay pure.
1 Timothy 2:9-10 says, I also want the women to be modest and sensible about their clothes and to dress properly; not with fancy hair styles or with gold ornaments or pearls or expensive dresses, but with good deeds, as is proper for women who claim to be religious. Paul isn't saying that you shouldn't look after how you look, he is saying that we should be more focused on the condition of our spirit and soul.
NOTE: This is a very sensitive subject and this is just my point of view. We should be careful not to be legalistic or too permissive either.
Short and sweet inspirations for Christian teen girls.