Erotic Bikini Calendar shows actual date and new hot girl in bikini for every day.
The current date is displayed on the icon. You can see bikini girls in popup, hot girls are changing every day. Then you can change display icon in options.
Options: only date, day and month, full date. Erotic Bikini Calendar is very popular a simple extensions for everybody.
You can add new photo or picture with context menu (right click on photo).