Just friends or something more?
The 18-year-old E! star and the 19-year-old One Direction dude were photographed in the singer's black Range Rover after leaving Craig's restaurant at about 12:15 in the morning.
However, a source tells E! News, "They aren't 'dating.' They are just friends. That was like the first real time they hung out. We will see what happens."
Meanwhile, a rep for Styles says, "There is no comment on this."
Jenner recently addressed speculation that she was dating rapper Young Jinsu.
"Enough with the rumors! I'm single, people," she tweeted last month. Her mother, Kris Jenner, also set the record straight on the romance rumors, telling E! News, "It's not her boyfriend. She doesn't have a boyfriend."
As for Jenner and Styles, time will tell, of course, if they are an item or not.
Be sure to tune in to E! News for One Direction Week starting today with an interview with Niall Horan at 7 p.m. and 11:30 p.m.