The 18-year-old snapped a pic with showing off her blue lips in honor of Bullying Prevention Day, while both ladies wore big shades.
The youngest Jenner also opened up about her mother's decision to not invite Caitlyn to her graduation party.
"Some people made a big deal about the fact that my dad wasn't included in that graduation party my mom threw for Kendall and I, and I did miss Caitlyn being there," she posted on her blog Tuesday. "It's understandable why she wasn't and I respected my mom's decision about it."
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