perhaps your family thoguht you would not be comfortable dressed as a bridesmaid, do you normally wear masculine clothes ? of others have recieved their invites and not you, I should imagine that the girl's family are having problems with you attending with your partner, some families just cannot accept the path you have chosen , but if you are happy why let them bother you ? rise above it all, I agree with the person wo said go away by yourselves and have a lovely weekend away rather than cause yourselves grief by this narrow minded lot.Recently I have been to a gay wedding [lesbian] and they came down the aisle as two brides, it was tastefully done and a very classy do in fact the best wedding I have ever been to and all their guests, including mum & dad on one side and sister & family from
Oz on the other side and we were all very happy for them, let me add I am 70 yrs young, so not all older folk are bigots.