Any suggestions. I want to look mindblowingly y/irresistable?

I think I'm cooking dinner for the guy I'm seeing on Thursday. I dont think we're doing anything Thursday, just staying in for the night but we're hopefully going climbing a mountain Friday (random I know but cant wait), then heading out Friday night. Any suggestions to look mindblowingly y on both occasions from top to toe. Thurs is gona be very casual and only really gona be dressing up to head out Friday night.