Kim Kardashian chose an interesting monochromatic (always) look for her return flight to Los Angeles from San Francisco -- it appears she had the airline-issue blanket wrapped around her waist as a skirt!

Kidding -- but seriously, that nubby, faux fleece-like midi pencil skirt was NOT a good choice. On top was her usual form-fitting turtleneck -- showing of her massive ta-tas and equally large nips (Lord have mercy).

Hubby Kanye West returned earlier in the day, from San Fran, letting his beautiful wife return home alone. She had to hurry up at get home to Nori, of course, Kim's busy grooming the year and a half-old for a career in fashion ... she's got flash cards for Karl Lagerfeld, Riccardo Tisci, Azzedine Alaia, Martin Margiela ... and Nori's got to have them all memorized by the time she's two, damnit!

So just what was Kim doing in SF, you might ask? Tech business, of course! The multi-media mama spoke at Recode's Code Mobile tech conference, teasing new aspects of her Hollywood game app. Looks like she's an Ashton Kutcher in the making!