On Saturday night, the Kim and Kourtney Take New York star, 30, surprised New Jersey Nets power forward Kris Humphries with an intimate birthday dinner at Manhattan hotspot STK.
"This was more of a get to know the parents affair," says a source of the dinner. "Kim and his parents really seemed to hit off."
Nibbling on a pear salad, tuna tartare and Dover sole, Kardashian, who recently starred in a racy Super Bowl ad, spent the night laughing and chatting with Humphries's family and close friends.
Ever the hostess, as the night came to an end, Kardashian picked up the entire $900-plus tab – and left a generous tip.