Katy Perry got together with Eylure (or Vice-Versa I don't know) and created some False Eyelashes. You have 4 option! The collection was launched late Frebruary.
I have seen these Lashes at Boots and Superdrug here in U.K. and the prices goes from 5.95£ for 3 of the Lashes, Cool Kitty, Swettie Pie and Oh Honey! and 6.95£ for the Oh My! ones. Why are they One Pound more expensive? I don't know. Maybe because the have more "hair" compared to the other ones.
I only tried to use Fake Lashes once and there were quite crappy because they came with a magazine. And also I think if I wore Fake Lashes it would bother me because I use glasses 24/7 :/. If sometimes my own lashes with certain mascaras they touch the lenses imagine with Fake Lashes on.