Meredith (Ellen Pompeo) and Addison (Kate Walsh) reunite to operate on a patient on 'Grey's Anatomy....

Twitter Lost Its Collective Mind Seeing Addison And Meredith Reunite On Grey's

That elevator scene!

ABC/Eric McCandless

Fans got a treat in Season 18, Episode 3 of Grey’s Anatomy, when Addison (Kate Walsh) returned to the show after years of being gone. And when she and Meredith (Ellen Pompeo) teamed up for an intense surgery, Twitter basically exploded.

ABC/Eric McCandless

Addison’s return mirrored her Season 1 debut.