Khloe, Kylie & Kendall Go Undercover ... We Ain't Talking 'bout No Kartrashians!

3/18/2016 3:16 PM PDT

Khloe Kardashian Goes Undercover ... I Ain't Talking 'bout No Kartrashians!

Khloe Kardashian aged about 50 years, and she's now from Albuquerque -- at least if you fell for her Hollywood makeup trickery on a tour bus. 

Kendall and Kylie Jenner joined their big sister on a Hollywood tour this afternoon, and all 3 were unrecognizable in their costumes -- especially Khloe, who posed as an old woman ... and Kendall, who looked like a red-headed Madonna.

Kudos on the brilliant makeup job -- we're guessing it's for Khloe's TV show -- but they screwed up royally by NOT getting on the TMZ Celebrity Tour!! Then again, we definitely would've talked "Kartrashians." Sorry, Khloe.

BTW, when YOU want TMZ Celebrity Tour tickets ...  you can only get 'em right here on after April 11.