Online or at a Beauty Supply store in your area. Talk to a stylist, she'll tell you where to get them in your area.
If you are getting your sister hair extensions, I would not recommend randomly buying a set of extensions, and then presenting them to her. Good hair extensions need to be fitted to the person's head and hair color. Check out hairextensions.com.
You can find some information and advice on clip hair extensions at pro hair extensions. They provide a wide ranged variety of different hair extensions and lots of information.
A local salon is the best place to find hair extensions. Online retailers such as Best Hair Buy, Amazon, and eBay also each supply hair weave extensions.
Eight inch extensions should do it.
Human hair is used in hair extensions as it gives the most natural and authentic look. Such extensions are available at all good hairdressers or can be purchased online at sites such as Love Hair Extensions.
There are many salons in central London that can do hair extensions, to name a few, Rush hair, London hair extensions, Braids, to find a full list of central London salons it is advisable you research on the internet for a full list and to find a salon that will fulfill your requirements.
Finding a store that sells Indian hair extensions is not very hard to do at all. In order to find Indian hair extensions, one can visit the Perfect Locks website.
If they're human hair, yes. You can treat them as you would your own hair. Keep in mind that just like your hair, you can damage your hair extensions, too.
EXTENSIONS or THE NEW EXTENSIONER
There are a variety of places that one could purchase black hair extensions. Black hair extensions are natural accoutrements to those who are seeking or looking to extend the length of their hair for stylish or beauty reasons. Amazon is one such location that one could find and purchase black hair extensions for sale.
NO HE DOES NOT HAVE EXTENSIONS IN HIS HAIR.
The actual hair extensions are 24 inches. If you are after an answer as to where the actual length will be once attached to your hair, then that would depend on how long your hair was in the first place.