Ariana Grande is on rumor patrol.
The 19-year-old star of Nickelodeon's Victorious and Sam & Cat, and singer of "The Way," recently tweeted, "Wrote something on my Tumblr about the rumors going around. Just didn't want you all to worry about me. Thank you. Xo."
She linked to a blog post discussing her weight loss and questions about her health.
"I don't usually like to address...