Expression or idiom about someone who has all the news [closed]

What do you call someone who knows all the gossip and stories about people in his neighborhood or surroundings, someone who’s always informed. It doesn't have to be expressed in a word. Could be a sentence (e.g. she knows the ins and outs), but I’m looking for a better way to express it.

Solution 1:

You could descirbe them as being in the know. While this often refers to someone knowing confidential information, it can also extend to someone who is just generally well informed.

Collins Dictionary

If you are in the know about something, especially something that is not known about or understood by many people, you have information about it.

Solution 2:

The usual saying is that they have their ear to the ground.