I haven't found any looking "slutty". I do think they look great on most women most of the time. But when I can clearing see camel toe, or the colour pattern of her underwear underneath, to me it is more "sloppy".
who gives a fuck? wear what you want because if you dress to conservatively you are a prude and if you don't dress conservatively enough you are a slut. There is no winning so you might as well wear what you want. If someone doesn't like you especially if it's a man they will find even the tiniest thing wrong and attack you for it so you might as well do what you want because people will be assholes even if you try your best to please everyone!