“UGLY Betty” star Becki Newton wasn’t thrown off her game the other night at the opening of the Gap’s new concept store in SoHo, where a paparazzo repeatedly referred to her as Kelly Ripa. Rather than correct him, Newton riffed for the camera and did a dead-on impersonation of the perky “Live with Regis & Kelly” host. Newton kept in character till the very end. When thanked by a clerk for stopping by, she quipped, “Don’t thank me. Thank Kelly.”