Ideally, you should aim for at least 2 months before your wedding date. It seems like a long time, however, things can get busy in the immediate lead-up to the wedding. You don’t want to be running around chasing things unnecessarily after this time or relying on something you need being. available in the shops. Make sure you do a full try on 4 weeks prior to the wedding just to ensure no alterations are needed, but to leave yourself enough time just in case.