What's going on here?!

Kim Kardashian attended the premiere of the film The Promise tonight at Mann's Chinese Theater -- it's about a subject close to her heart and her culture -- the Armenian genocide.

Set during the last days of the Ottoman Empire, The Promise follows a love triangle between Michael, a brilliant medical student, the beautiful and sophisticated Ana, and Chris - a renowned American journalist based in Paris, according to IMDB.

Well Kim strutted her stuff on the red carpet -- a proud daughter of an Armenian father -- and sent inside to see the film staring Christian Bale and Jean Reno. But she didn't last long. Fifteen minutes into the film, our photographer caught Kim leaving in her chauffeured car. Her security detail told us Kim wasn't feeling well.

Hmmm ... could it be morning sickness in the evening? Does Kim have baby #3 on the way? Her tummy sure was taught in her tight dress. Food poisoning?