Credit: Brandon Todd/Splash News Online

After a series of romantic-looking sightings, Sean Penn and Scarlett Johansson all but confirmed their coupledom with the ultimate public display of affection for super-private stars.

Hand holding.

They were spotted in the incriminating position Saturday night, outside a White House Correspondents’ Dinner after-party in Washington, D.C.

Johansson – wearing an Elie Saab cocktail dress and newly auburn hair – started the evening off with her brother, Hunter Johansson, in attendance of the annual event before joining up with Penn at the Vanity Fair/Bloomberg bash. They reportedly left together around 2:30 a.m.

In addition to their cozy outings close to home, Johansson and Penn have also been seen together in Mexico.

The actress’s husband of two years, Ryan Reynolds, filed for divorce in December.