how do you build a more intentional, low waste wardrobe for occasion dressing?

hi everyone, i’m trying to shift toward a more sustainable approach to occasion wear like weddings and formal events, and i’m wondering how people avoid buying one-off dresses for each event while still finding pieces that work across different dress codes, feel feminine, well cut, and have nice drape. would love to hear what’s worked for you, whether that’s brands, rental services, or strategies for building a small rewearable rotation.