Most times the photo is edited and cropped, they change the bright and contrasts and even add stickers to make it more attractive. Most of these girls are selfie addict women and you always find some softcore, non nude and even full nude pics and videos, which is great but the problem is that I just found that my girlfriend is posting tons of sexy style selfies on instagram and lot of guys are commenting and saying dirty things. Instagram allows girls to post as many photos you want, even if the girl is fully naked. Girls do it to met guys and to make other girls envious. Girls loves dirty comments on their sexy pics.