After all, celebrities depend on their image to make a living.
Moreover, with so many paparazzi present, if someone were to take a photograph of their swollen eyes, it would be too embarrassing.
However, in most cases, they wear sunglasses to hide their indifference.
Only a small handful of celebrities would be at the funeral because of their relationship with the deceased. Most celebrities treat these events as an opportunity to showcase themselves, because other than award ceremonies, celebrities' funerals would be the most crowded.
However, if they do not feel that much for the deceased, it would inevitably look fake no matter how much they try to appear sorrowful. Hence, sunglasses are used as a disguise, and perhaps the kinder people might imagine that those pairs of eyes behind the sunglasses are actually red from crying.
