lesbian black tie

my girlfriend's and I are going to family wedding and its black tie (on a Thursday night and black tie, not optional or formal) and I am planning on wearing this https://www.aritzia.com/us/en/product/audience-satin-dress/120213.html?color=1274 and cropped suit jacket in brown https://www.aritzia.com/us/en/product/etiquette-blazer/118278077.html?utm_id=20673883861------&utm_source=google&utm_medium=cpc&gad_source=1&gad_campaignid=20664281931&gbraid=0AAAAADn95Obdm4RTlc--SsVb1IPrQESfk&gclid=CjwKCAjw7_DEBhAeEiwAWKiCC4AiiSl4EqwyTEmuENGUs5G6M6JPmN_Ca79NVV3bwyt_B_oCEXe6KxoCKegQAvD_BwE&color=18891 tbh some of the family is protesting the black tie by not wearing tuxedos so i feel okay about my dress but thoughts??