The 31-year-old E! star tweeted a picture of herself in a teeny tank top after getting a spray tan with the caption, "The tannerexic (sic) mom has some serious competition!!! Lol."
Kim then reassured fans that her shockingly dark appearance was not permanent. "Relax that's just a spray tan! It washed off & I'm back to my normal tan self! But how crazy does it look after being on for 8 hours!"
She added, "How do you spell tanorexic anyway? Tannerexic? Tannorexic? Is this even a real word?"
Aside from tanning, Kim was also busy this weekend tweeting pics of herself posing in a leather jacket, booty shorts and fishnets for Vogue Italia and celebrating Mother's Day with the Kardashian clan.
Reality star Kim Kardashian challenged New Jersey Tan Mom Patricia Krentcil Saturday via Twitter.