Sometimes, it really pays off to just send a cold email to someone and see what happens next. That seems to be the case with what Justin Peck, from the New York City Ballet, did when he wanted to ask if Sofia Coppola would be interested in collaborating on a project.
The website celebsbar.com is an aggregator of news from open sources. The source is indicated at the beginning and at the end of the announcement. You can send a complaint on the news if you find it unreliable.