“GMA” co-host Robin Roberts almost upstaged the grooms at the intimate wedding for her show colleague, weatherman Sam Champion, and his partner, artist Rubem Robierb. Roberts, who underwent bone-marrow transplant surgery in September, looked stunning in a fitted red dress during the Friday afternoon ceremony at Champion’s New York apartment, where they were joined by co-anchors Lara Spencer, Josh Elliott and George Stephanopoulos (Robierb’s mother and sisters Skyped in from Brazil to be a part of the festivities). Roberts also read a poem by Elizabeth Barrett Browning. State Supreme Court Justice George J. Silver conducted the 10-minute ceremony. Champion joked about the ceremony on Friday’s “GMA,” debating which song he and Robierb would dance their first dance to — “Is ‘Stairway to Heaven’ out of the question? That was the ’70s love song,” he said. The happy couple are planning another celebration on New Year’s Eve in Miami.