The name attached to the word "Bridal" is a common practice. Initials also work if you have a longer name. Anything over 7 letters or 2 syllables might be too easy to forget, but if it's a good fashion label sounding name, then it might be a good idea to market it.
Alternatively, you can use a term the elicits a feeling of feminen beauty or mystique. Images of princesses, fairy tales, and other popular references can help.
Some examples of successful bridal boutiques: