Talk about your strange bedfellows!
In the pic, taken by Jenner's boyfriend Corey Gamble, both the Keeping Up With the Kardashians matriarch and the Oscar-winning actress are dressed in black and their legs are intertwined as they gasp playfully.
"Happy Birthday you piece of s--t... God I love you #Jenniferlawrence," wrote Jenner, 59. "Thanks for making this night a night to remember.....even if we did get caught... I love you Happy Birthday Gorgeous!!! #Bible #momager #doll."
Lawrence has not commented on the photo. The Hunger Games actress celebrated her 25th birthday last week.
She has said previously that she likes to watch Keeping Up With the Kardashians.
"I was in NYC and I ran into Jennifer Lawrence," the U.K. newspaper The Sun quoted Kim Kardashian as saying earlier this year. "We said, 'Hi' and walked into the elevator and as the doors were closing, she screamed across the lobby, 'I love your show'. We were laughing so hard."