I looked over the internet for probably an hour looking for something similar. The glass shades are 7ish inches tall. I loved the shape of them too. I haven't found any that matched or near the same size. We went to Lowe's and I found some basic white ones that were about $13 each. They are 3 inches shorter which required buying smaller light bulbs so they wouldn't stick out the bottom of the shade. A regular CFL was to big so we found some "micro" CFLs at Lowe's.
The 2 new glass shades with the old one. Excuse the dust!
The 3 new glass shades.
You can see the before HERE and the after HERE .