Empress Sissi and Emperor Franz Joseph at Bad Kissingen, 1898.
Empress Sissi forbad people to take photos to her after she turned 30, so there aren’t much photos of Sissi in maturer age. Happily, there are a few of her later years that let us to see how she looked. Despite she is covering her face with a fan and she is taking an umbrella her face can be seen, unlike other photos of her in the same situation.
The original photo and below a painting based on it.