The most difficult is to figure out what kind of surprise are you going to do. For this you first need to understand what kind of person your friend. If it is bright, cheerful and relaxed, then as an original gift greetings will fit the next option. Get a group and organize a party in the club: film evening at the booth, and decorate with balloons and posters of congratulations, order the chef's personal cake and arrange with the waiter to make it right.
As an option – party in the limousine or on Board.
If your girlfriend romantic person, you can surprise her in the following way. Write on the pavement greeting, at midnight before the birthday call a friend on the street, and then with her release into the sky a bunch of balls or Chinese lantern. Such an event she will remember for a long time.
If the friend you are modest and shy, try to make a surprise that will help her a bit to open up. For example, you can order one for her professional photo shoot, which she would not dare to never. A good photographer will be able to find an approach to even the most shy models, and you will have a wonderful memory pictures.
You are friends with this extreme? Then your imagination can be limitless. Hang gliding, skydiving, bungee jumping and much more will be a great entertainment option for the holiday.
However, the celebration is one part of the surprise. The second part is the gift. You should choose according to the nature and interests of a friend. If she is a fashionista and a Shopaholic, the best gift for her will be the package of clothing from a favorite store, or the certificate on cosmetics. If she cares about her looks, give her a campaign on SPA treatments. If dreams of a new profession – pay for her first lessons in specialized courses. A good way to choose gift is to listen carefully to the person. Certainly in conversation with your friend casually talked about what she would like to buy or during your joint shopping pay attention to any thing.