The Kardashians producer-star Kendall Jenner had a hot date on Saturday night with a tall mystery man, whose head she cropped out of a coy Instastory. Coy couple: The Kardashians producer-star Kendall Jenner had a hot date on Saturday night with a tall mystery man, whose head she cropped out of an Instastory 'Wanted space and time apart': The 26-year-old …