Need A Necklace Extender

I had a necklace that I bought long time ago and it was a bit long. I decided to bring it to place where they repair jewelry. I had the length adjusted and I was happy about it. That time, the necklace trend was not long, it was short in length. Now, the trend, the fashion jewelry is changing. I am looking for necklace extender to bring back the length of my old necklace. I love that necklace and I want to go with the flow of fashion. I like to see those ladies wearing long necklaces. I found this online store that sells any styles of necklace extender.