Would it be weird to invite a new/old friend?

Hi everyone,


So bit of a strange one I feel but basically my fiance and I's wedding is September 2022. 40 guests including ourselves, ceremony at 3pm, street food informal dining and a dj for the evening but finishing at 10pm so will be quite an intimate wedding. Close friends and family invited. My two bridesmaids are my older sisters (we are very close, talk all day every day they are my best friends), i've also been working full time and studying for my degree which has left very little time to meet new people and make proper friends - I have aquaintances from work that I chat to outside of work but they are not invited to the wedding. Most of our friends who will be at the wedding are other couples with my partner mainly being friends with the guys. On the other hand I have a big family and a lot of the guests are invites from my side. Long story short, a girl who used to be my best friend all through my teens until I was 20/21 (I am now 26) until we fell out, got back in contact with me early last year March 2021 out the blue and since then we meet up about once a month to catch up. I wouldn't say we are particularly close but she is my oldest friend and I greatly missed her before she reached out. Now would it be weird to invite her and her partner to the wedding? I think i'm quite self conscious due to the size of the wedding and not basically having my own girl squad there so would it be noticable that she was my only personal friend invite?
Thank you for your thoughts!