Angelina Jolie at the 2009 OscarsDoes Angelina Jolie think she's fat? We don't! That's Angelina on the right at the Oscars, looking svelte and lovely -- perhaps not her skinniest, but who cares if she's stick-skinny? She's a stone cold fox! Maybe it's for the character in her upcoming film, maybe it's pressure from the studios, but for whatever reason, Angelina Jolie is reportedly on the Master Cleanse -- which made its name when Beyonce used it to drop weight for Dreamgirls -- and people are getting worried ...

According to The Sun, "she aims to shed 21lb in just 21 days for her role as a CIA officer unmasked as a Russian spy."

The role is in the upcoming movie Salt. Are Russian spies supposed to be skinny? With all those potatoes and vodka?

A source told The Sun: "She does all her own stunts but we worry she could injure herself due to the weight loss."

We tried the Master Cleanse -- a liquid fast of weird lemonade made with maple syrup, lemon juice, and cayenne pepper -- a couple of times, and while it seems like a fine way to lose weight quickly for an event (or a role), the weight does come right back. That said, it's toilet hell and you wouldn't have seen us attempting stunts.

Angie probably has, like, six doctors watching her -- we don't recommend any drastic diet like this without talking to your physician. Anyway, keep your eyes on the tabloids for a miraculously shrinking Angelina!