Please help me find something to wear 😭 I am not a girly, fashion forward person but I’m going to an event.

I’m attending a bridal shower and I need to wear something dressy. I’m a jeans and t shirt kind of gal. I hate the way dress pants looks on me because I’m a big girl. I’m in size 12 jeans. It will probably be cold so I’d like something with a cardigan type thing if possible. I am pretty insecure about my arms so that would help with that as well. I have a big midsection so I always struggle to find something that looks decent on me. I of course won’t order online, but I’d like some good ideas and inspiration if anyone can send my photos of what would be appropriate and maybe look good on my body type. Also, I have no idea what kind of shoes since as I said, it will probably be cold. It’s in a more upscale place in the city. Thank you for any help 💕