Giving a gift to your future stepchild before or during your wedding is not necessary; however, it is a nice way to show her how excited you are to be a part of her life. It's also a fine way to mark a special occasion. Gifts for stepchildren can run the gamut from simple to extravagant.
Giving your stepchild a watch is a nice way to mark the beginning of a new time in his life. Giving a watch is especially convenient, as watches can be engraved with a message or quote. Engrave a note somewhere on the watch -- preferably the back -- that is meaningful to you both.
Charm bracelets are a versatile gift that can be added to for years to come. To start, purchase a charm bracelet with the birthstones of everyone in your new family. During each holiday, get your new step-daughter a charm representing an experience or a memory the two of you shared recently.
By purchasing an engravable photo frame, you can give your stepchild something that can be displayed and treasured for years to come. On the day of your wedding, have the photographer take a picture of the two of you. Place the photo into the frame and have the frame engraved with the date or a special message.
Room accents can include a nameplate to hang on the door of your stepchild's room, a personalized piggy bank, a snow globe that features a picture of the two of you, a T-shirt, backpack or even a nightlight.
Give your future stepchild the gift of being included in the wedding ceremony. Once you have finished your ceremony with your spouse, recite vows to your stepchild. After reciting vows, have the officiant bless you all as a family.