The ultra chi-chi, international affair Diner en Blanc is back. Are you on the list?

Ssshhh. The world’s largest and most legendary pop-up dinner party, Dîner en Blanc is back.

It’s the fourth time for this super hush-hush affair, but the 30th anniversary of the entire shebang, which occurs annually in close to 80 cities in 30 different countries.

“For almost 30 years, Le Dîner en Blanc de Paris has been taking place without authorization, in some of the city’s most prestigious sites,” reads the website. “The first editions were not easy to pull off. Today, French authorities know that the event is always well organized and that guests are always respectful of public property. Moreover, the event’s photogenic quality helps promote the city’s image as a stylish Metropolis.”

You already know the dress code: all white. And tres elegante.

“Originality is always encouraged as long as it stays stylish and denotes taste,” reads a release.

On 7 p.m. Friday Nov. 9, the ultra chic pop up picnic will convene at a yet to be announced, secret public space. The location will be revealed at the very last minute to “preserve spontaneity and secrecy.”

Last year, DEB was held on the grounds of the former site of the Miami Herald. There was DJ, dancers in angel wings, white balloons and serious selfie action.

This thing goes beyond the ordinary VIP rules: In order to participate, guests must be a member or be sponsored by a member from the previous year, or sign up to official website’s waiting list. Keep an eye out for your invite. Phase 1 of the process started Wednesday.

Once confirmed, each person’s participation in the event becomes mandatory, regardless of weather, as Dîner en Blanc is a rain or shine event.

It’s also a BYO affair: Guests are asked to bring their own picnics meals, tables, chairs, fine china, silverware and white tablecloth. There are no paper plates or plastic cutlery permitted, so don’t bother running out to Target beforehand.