Of course, this tip also means something different for everyone. Sure, for the special "first sex date" we might all dress up a little more than usual. But the most important thing is that you still feel comfortable in your outfit and remain yourself.
You usually belong more to the jeans and sneakers group? Then please don't run straight to the next store and buy a sheath dress and high heels. Instead of feeling more confident in your outfit, you might be doing the opposite in it.
Of course, the same applies to underwear and lingerie! Although hot underwear can give some women an extra dose of self-confidence, others feel uncomfortable in it. So that you can really enjoy sex with your new partner, you should above all feel good in your own skin. If you want to try something new, it's best to try on the sexy underwear beforehand and walk around your apartment alone in it. If you don't see yourself in it at all, then maybe this isn't a good option for your first sex with your new partner.
Again, remember that he got to know you for who you are and found that attractive about you. So don't freak out and wear what YOU feel great in! He will then definitely perceive the good vibes.