"Here's the deal: There was nothing sexual about that picture or that situation," the actress told TMZ's cameras Wednesday outside of Los Angeles International Airport. "You guys are projecting your trash onto it, and you're acting like covert pedophiles, and that's not cool."
The photo took the internet by storm this week after Arias, best known for his role as Rico on "Hannah Montana," posted it to his 490.tx blog at the end of last month.
Arias captioned the photo "Roar."
Another photo, captioned "Simba & Nala," shows the pair striking the same pose - only Arias' expression is more serious.
The former child star's blog features numerous photos of Willow, her older brother Jaden Smith and their pals Kendall Jenner and Kylie Jenner.