So apparently "twintails" are a thing in Japan - from classic anime heroine Sailor Moon to vocaloid idol Hatsune Miku - so Tetsuko decided she wanted to try the look for herself. Probably not going to be a permanent or even long-term alteration in her appearance, but every once in a while a little change can be good.
This illustration was created entirely in Manga Studio 5 EX - a huge improvement in ease of use (especially in coloring) from MS 4. I'm trying to switch over to MS5 for my comics and illustrations from Photoshop, mainly because of Adobe's decision to go subscription-only on all their software; but there are still a couple of tools and features of Photoshop (I'm on CS3) that I miss: mainly better noise and blur filters. (PS is also still in my workflow for making comics because the text handling
is better than in MS, although that may be only because I'm more used to it.)
Speaking of Sailor Moon, this is not the first time that Tet-chan has worn twintails.