Carrie Ann Inaba likes to find out who is competing on Dancing With the Stars the same way the fans do, with an air of mystery leading up to the official announcement. “I never know, I find out via social media,” the DWTS judge, 58, exclusively told Us while promoting her partnership with Novartis to spread awareness of Sjögren’s disease. “Of course, I used to be like, ‘Can’t you tell me?’ And then I was like, you know what? It doesn’t matter.” Carrie Ann joked that fellow judge Derek Hough “always seems to know who’s coming” but she “never” does — and she prefers it that w...