When Robert De Niro bumped into real-estate queen Barbara Corcoran at the “Today” show makeup room the other day, he asked her, “So how is the real-estate business?” Corcoran didn’t respond but asked him, “Are you still married to that beau tiful wife of yours?” He just chuckled. It was a far cry from when Corcoran first met De Niro a few years ago at his TriBeCa Film Festival, where she was a judge. She was so in awe of the star that she couldn’t speak di rectly to him and spoke only to his wife, Grace Hightower.