Disney star Tiffany Thornton is pregnant with her second child. The actress announced the happy news with a cryptic note on her WhoSay account, accompanying a photo of herself and a group of pals. She wrote, "Guess what?! Hint: why am I holding my stomach?" The 27-year-old Sonny with a Chance star and her husband of two years, Christopher Carney, welcomed son Kenneth James last year (12).