Hillary Clinton's aides haven't just been secretly trashing their boss, newly leaked emails reveal: According to one exchange unearthed by Wikileaks, Clinton staffers thought presidential daughter Chelsea Clinton was a two-faced "brat!"

Longtime advisor and co-founder of the Clinton Global Initiative, Doug Band, let his true feelings be known in a series of jaw-dropping email exchanges.

In 2012, Chelsea wrote a friendly email to Band and senior Clinton advisor Justin Cooper under the alias of Diane Reynolds.

She wrote, "Hi Doug and Justin - Just met Clark Winter on our BA flight and he had terrific things to say about Dad and you Doug and CGI generally and it was nice to hear as ever so I wanted to pass along. Sorry for brevity. We're taking off. Hope alls well in Davos Justin."

But instead of accepting the compliment, Band turned around and forwarded the email to Clinton staffers Cheryl Mills and John Podesta and SLAMMED Chelsea.

"She sends me one of these types of emails every few days/week," Band wrote. "As they say, the apple doesn't fall far ... A kiss on the cheek while she is sticking a knife in the back, and front."

It's unclear if Band's "apple doesn't fall far" remark was directed toward Bill or Hillary, but the trusted advisor was clearly calling out one Chelsea's parents for two-faced tactics.

As RadarOnline.com reported, this was hardly he only time Band secretly slammed Chelsea.

In a 2011 email he blasted, "She is acting like a spoiled brat kid who has nothing else to do but create issues to justify what she's doing because she, as she has said, hasn't found her way and has a lack of focus in life."

Story developing.

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