This might not be a popular opinion, but I think fishnets are due for a comeback. They shouldn’t just be for truck-stop hookers, ’80s punk rock girls, and Rocky Horror Picture Show screenings. Like any good nerd, I appreciate fishnets mostly for the fact that 90% of comic book superheroines wear them. (DC’s Black Canary has been kicking bad guys in ‘nets since about 1971.) Ditto garter belts. I can’t imagine any guy would have a problem with either. (Well, maybe ones with poor fine motor skills.)
As for panties, wear whatever makes you feel comfortable and sexy. Cotton, lace, thong, granny– anything that unleashes your inner sex panther. The longer you’re with a guy, the more you’ll catch on to what sort of underwear will make his eyeballs literally jump out of their sockets like a horny wolf in a Tex Avery cartoon.
Do what makes you feel sexy. If that means fishnets and a garter, go for it. He’ll appreciate that you dressed up for him, and then immediately tear everything off of you. Remember that the guy wants you, not your underwear. (Hopefully.) If a guy tells you that a certain type of panties are a dealbreaker in the bedroom, that means he’s had sex somewhere between zero times and never. No guy has ever said, “[Insert color or style of] panties? Eh, I’m done here.” Well, no guy you’d ever want to see you naked anyway.