well, some of the things you could give her:
1. laptop (if she dosent have one)
2. a new phone
3. an iPod touch/an iPhone (if she dosent have one)
4. make-up is always good.
5. hair products (hairspray, hair bands, etc...)
6. you could give her a really nice birthday party.
7. you could make a scrapbook, with photos in it for her. (this is good for all ages)
the list goes on and on. things with photos are usually the best thing for all ages.
A girl talks about her birthday because they love friends, family and for some kids...GIFTS! good presents would be perfume, lotion, germ-x.................and so on
A personal gift for a teenage girl could be jewelry or accessories that you made yourself.
CDs and DVDs always make great gifts. If she is into makeup you could buy some makeup like lip gloss. Handbags are another great option. They have some nice ones for teens at Target. If she has an iPod an iPod gift card is another great one.
It has just become traditional to celebrate birthdays by giving gifts to the person whose birthday it is. In some cultures, the person celebrating gives gifts to others.
There are numerous companies which will deliver birthday gifts. Gourmet Gift Basket, From You Flowers, Hale Groves, Gift Basket and My Fast Basket are online websites which will deliver birthday gifts.
a card, money,poems,baking. books, a collect of some beautiful words might be awesome, do-it-yourself jewelry is good as well, or some lessons on teaching a girl some life-long learning.
video games
Many teens would love to have a car for their birthday. You can also get them money, a pet, a cell phone, or even a laptop. These are great gifts.
www.gettingpersonal.co.uk has some good, inexpensive gifts ideas. Clintons always have wonderful selection of great gifts that you can buy for a reasonable price.
Some great and common birthday gifts for mothers include books and fragrances. Other good ideas would be to get mothers indulgent gifts such as bubble bath oils, candles and relaxation CDs.
Personalized gifts are always great ideas for family members, like your grandma. Some great gifts would be a scrapbook of family photos, a personalized mug, or even a hand made card. Here is a site for other great ideas for your grandma: http://www.gettingpersonal.co.uk/birthday-presents/birthday-gifts-for-grandma.htm.
www.find-me-a-gift.co.uk/18th-birthday-gifts/18th-birthday-ideas.asp has lots of great ideas for birthday gifts for 18 year olds. Good luck and have fun.