Harry Styles wrapped up his first solo tour in, well, style in L.A. on Saturday. Rumored ex Kendall Jenner was there to cheer him on.

Proud Super Fan

The ex-One Direction star played his final show and the second sold-out night of the tour at The Forum in Inglewood, CA with a gaggle of Hollywood A-listers in attendance.

Most surprisingly, Styles' alleged ex-girlfriend, supermodel and reality star Jenner, was spotted in the crowd. She was singing along and dancing enthusiastically while accompanied by family hairstylist Jen Atkin.

The 22-year-old Keeping up with the Kardashians star seemed to know several of Styles' tracks off by heart, including "Just a Little Bit of your Heart," which he co-wrote for Ariana Grande.

He and Jenner have been friends for many years, sparking romance rumors as far back as 2013, with things really heating up about two years ago following a Caribbean vacation over the New Year's holiday. They were spotted hanging out several times over the next few months as well.

The two were alleged to have had a very intimate lunch date together at one stage. However, sources close to both of them at the time were quick to dismiss any talk of a romantic connection.

"Nothing was ever going on with them. They hang out a lot," they said.

Most recently, the two attended a Kings of Leon concert together.

Fans were ecstatic on social media about seeing Jenner at the show supporting her maybe-ex regardless. She wasn't the only high profile star to make an appearance, however.

Also in attendance were Shawn Mendes, located just a few seats down from her, pop star Meghan Trainor and her fiancé Daryl Sabara, actresses Phoebe Tonkin and Kate Beckinsale, and 5 Seconds of Summer's Michael Clifford.

Bittersweet Ending

The 24-year-old performed all 10 tracks from his self-titled debut solo record, along with One Direction hit "What Makes You Beautiful," and a cover of Little Big Town's "Girl Crush."

He made a heartfelt speech during the show, thanking fans, family, and friends for their support during the tour, which kicked off back in September.

"This doesn't happen to people like me very often at all, and there is one single reason why I get to do this job and it's because of every single one of you. I thank you from the bottom of my heart. You have changed my life. I love you so much," gushed the singer.

He also talked about wanting to play at The Forum ever since seeing The Eagles there back in 2014. Styles then promised that he'd be back shortly following a sojourn in the studio to make some new music.

Knowing His Audience

Styles made sure to interact with several of his biggest superfans during the show, including shouting out one from Rhode Island who has been present at several of the dates.

He also responded to a fan brandishing a sign that reads, "I'm gay and I love you."

"I mean, we're all a little bit gay. We're all a little bit gay, aren't we?" he said to rapturous cheers from the audience.

Styles first played new song "Medicine" back in March at his show in Basel, Switzerland, and it became the track that turned him into a gay icon.

Country megastar Kacey Musgraves opened for him at The Forum, performing several tracks off her hit new album Golden Hour, along with a cover of the Gnarls Barkley hit, "Crazy."