The secret is out. Brandywine in Black, the popular pop-up gala, will usher in spring at the Brandywine River Museum on March 21.

There's a special bonus: guests can take their own private tours of the Jamie Wyeth retrospective now showing at the museum. The artist himself is invited to the event.

"The location is fabulous, like sitting down at your dinner table with friends, food and wine as the sun goes down on the first day of spring," says Vince Moro, founder of Brandywine in Black and it's summer sister event, Brandywine in White.

Here's how it works. Much like Diner en Blanc, guests wear black and pack baskets and coolers with their favorite foods and drinks, along with table settings and go to a designated designation, which is kept secret until just before the event. Their tables await them at the venue, along with dancing, music and a sip-and-mingle reception.

This year, in honor of spring, guests are asked to add a touch of green to their outfits and tables. In addition to a silent auction, there will be prizes for the best decorated tables. So don't forget the candelabra.

Brandywine in Black benefits Young Friends of the Brandywine, a group dedicated to the conservation and preservation of the river and its environment.

Tickets are still available at $30 per person here.