Hello!

First time poster here. My partner will be bringing me as his plus one to one of his close friend’s wedding in New Mexico this January. He’s chosen as one of the groomsmen. I don’t want to be too overdressed nor underdressed as this will be my first time meeting this group of friends of his. The attire is semi formal & all colors are welcome. The wedding party will be wearing green/sage green colors. I don’t know if it’s smart to wear the same color as them but I’m leaning towards that just to narrow down my choices, or else I’ll probably opt for black or brown. These are my choices so far. Please let me know what you think. I would really appreciate some (kind) advice.

My husband and I are super casual people who don't own any fancy clothes. We have a friend's wedding coming up at the end of December and the DC is semi-formal, after googling what that looks like, we still are at a loss for what to wear. I have a sweater dress with a belt that I can wear with black leggings but I'm not sure if that's too casual. Budget is tight right now so we'll likely be looking at thrift stores for outfits but not sure what kind of dresses to look at or if he should wear vest, no vest, suit.... Any help would be highly appreciated!!

As the title says, I am a guest for a formal wedding this December in New York. I am terrible at clothes shopping, I don’t have a fashion bone in my body. Can you all help point me in the right direction of what kind of dresses I should be looking for? Also, how do I make sure that I don’t freeze to death?