Every king has his crown, but for Duck Dynasty star Si Robertson, the one item he can't live without is his blue Tupperware cup -- preferably filled with iced tea. Robertson explains the full ...

The snap shows the reality TV star clutching onto a drink contained in a cup that looked similar to the style he was regularly seen holding in Duck Dynasty. "You never know who you will run into ...

The Tupperware toting “Duck Dynasty” star spoke to FOX411 about the book and some surprising hardships that he's battled. FOX411: What's with the cups ... I drink iced tea out of them.

“Hope his cup of tea will be on there too,” one person writes. “Si!!!! That’s right JACK!,” adds another, quoting one of Uncle Si’s famous catchphrases. “There’s no Duck Dynasty ...