Earlier this month, Kendall Jenner and Harry Styles sparked dating rumors when the two were spotted getting cozy on a yacht while on vacation in St. Barts. Recently, it was reported that the two spent some time together at a party in Los Angeles, and they were joined by Jenner's mother, Kris, and Styles's stepfather Robin Twist.

According to E! Online, the model and the One Direction member were at a private party celebrating music agent Jeff Azoff's birthday at the Troubadour rock club in West Hollywood, California on Saturday, Jan. 23. The website reports that the 20-year-old and her mother arrived at the club about an hour after Styles and spent about an hour inside before leaving. The 21-year-old is said to have left the venue later that night.

In pictures posted on the website, the rumored pair is seen wearing matching black outfits, with Jenner in slim-cut black pants, a black cropped top under a short fur jacket and black strappy sandals. Meanwhile, the singer donned black pants, a black shirt and a black and white striped coat for the event.

For now, it is unclear if the two are dating since neither one has commented on the nature of their relationship. But in an interview with "Entertainment Tonight's" Kevin Frazier, Jenner's older sister Khloe Kardashian said that she's sure that her sister and the British boy band member are dating.

"I don't know if they're like boyfriend-girlfriend," Kardashian explained to ET. "Nowadays I don't know. People are weird and stuff. So, I don't know their title. But I mean, they were in St. Barts together hanging out, so to me that's dating."

A source close to Jenner told ET that something has been going on with the model and Styles for a while and that it was the 20-year-old "who made the first move" by inviting the singer to St. Barts.

"Kendall doesn't want to get hurt, so she's proceeding with caution," said the insider.