The O.C. fans go wild over reunion snap of Mischa Barton, Melinda Clarke and Tate Donovan

See Mischa Barton With Her 'O.C.' Parents: 'Cooper Family Reunion!'

Mischa Barton Reunites With Her Parents From ‘The O.C.’ 15 Years After Finale: ‘Cooper Family’

Mischa Barton puts on a leggy display in a frilly dress while running errands in Studio City