One of the new camera apps found on the Xperia T2 Ultra is called Portrait retouch, The camera app allows you to apply different styles to your portrait. You will also be able to see the changes in real time, before capturing the shot.
The app has just been ported for use with all Xperia handsets running Android 4.1 Jelly Bean and above. It even works with the Xperia L and Xperia M. To install, download the zip package here and then either flash via ClockworkMod Recovery or move the files to System > App. You will need to be rooted for this to work.