Black tie attire for a wedding typically refers to elegant evening wear for both men and women. For context that does not mean black clothing or black ties. Here are some examples of what black tie attire entails:
For Men:
Any color tuxedo (PLEASE REFRAIN FROM WEARING ALL BLACK ON BLACK PER GROOMS REQUEST)
A bow tie
Dress shoes
For Women:
A floor-length or ankle length evening gown
Or an elegant pantsuit
Dressy heels or evening shoes
It's important to note that black tie attire is very formal, so guests should aim for a polished and sophisticated look.