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Bristol Palin isn't afraid to show the world her beauty regimen ... mud mask and all!

Sarah Palin's 20-year-old daughter posted the above photo with son Tripp, 3, sticking out his tongue. Guess the little boy is not a fan of mom's muddy mess.

Bristol has been busy filming her upcoming reality show with fellow Dancing With The Stars alum Chris and Kyle Massey.

In the show to be aired on Biography, Palin will show her move from Alaska to Los Angeles, as well as her involvement with various charitable projects.

We'll be watching!