So I (28f) am getting married in July to my fiancé and we've been planning this wedding for over a year. everything’s been going fine until my sister (24f) told me she wants to announce her pregnancy at the reception I’m happy for her, like genuinely, her and her husband have been trying for a while and I know it’s a big deal for them but when I told her I’d rather she not do that announcement during my wedding, she got super pissed said I was being selfish and that it’s the perfect time since “everyone will be there anyway” I told her this day isn’t about her she called me a drama queen and said I was gatekeeping the family or something. now my mom’s on her side saying I should just let her do it and “share the spotlight” for the record, my fiancé and my maid of honor both agree it’s not the time or place for that kind of thing. but now my sister’s threatening to just say it during her speech anyway so yeah.
AITAH for wanting the wedding to just be about me and my fiancé for one day?