Plenty of girls still wear them, don't despair. =P Lmao. I think it's just more common for women to have a wider variety of underwear styles that they like, rather than being 'strictly thongs' or 'strictly bikini', etc. I like several different styles.
No, thongs/g-strings are not out of style. No "style" of underwear goes out of style, HOWEVER, they do become less of a trend.
Thongs/g-strings were worn AND shown off as part of a fashion statement and to attract male attention, but with todays society becoming more sexed up, thongs/g-strings are hardly attention catchers but rather an example of distasteful dressing and trashy(to show them off).
I personally do not wear thongs/g-strings, I wear boyshorts and bikini style underwear.
a lot of girls have their own preferences. for myself, I'm not a fan, only for occassions with my boyfriend. I prefer cute boyshorts, booty shorts what not with lace. but I don't like wearing a g string as much.