Lesbian wedding attire

So my girlfriend and I just got engaged and are starting to plan the wedding. My issue is I have no idea what to wear. I'm not super feminine and have always felt very uncomfortable in a dress. But, I'm also not very masculine and not quite butch enough to feel comfortable in a suite and I hate pant suits lol. I don't think there's a way around this and I'll have to bite the bullet on one of them but if anyone has any other suggestions I'd love to hear them.

Maybe robot costumes? Overalls? Something classy but comfortable ig