something similar to jessica hair extensions

i am looking for somnething like the jessica simpson hair extensions.i like that concept instead  of placing different extensions here and there.i cannot find anything like that except hers.i dont want to buy the jessica ones because i heard they look real fake shiny like dolls hair.her real hair is just way to expensive.and the really long ones that i am looking for are really more like 17 inches as opposed to 23 inches.i need wavy ones that are long.anyone know where to find these and what are they called.i have googled them online and called them one piece clip on extension.or is there another name for them.thanx girls