Actually, that's interesting about the clip on pieces girls, because when I had my extensions in, some fell out as time went on, but they were plaited in, then glued, and overall, lasted for 7 months. I had them left at the length they were put in, which made them very long, and never had any trouble with them at all. The worst bit was when it came to having them out, as some entanglement'd happened where my own hair'd grown at the back, but they looked very natural and the strands were matched well. Might try the clip on pieces at some stage though.