Why Rob Kardashian Wasn't At Sister Kourtney Kardashian's Wedding: Report

Rob Kardashian skipped his sister Kourtney Kardashian's wedding for a reason, according to a report.

Kris Jenner's only son was noticeably missing from Kourtney and Travis Barker's wedding in Italy Sunday, but an unnamed source told Us Weekly that his absence isn't due to any drama between the siblings.

The "Rob & Chyna" alum "really wanted to be there for Kourtney's special day," according to the insider, but he didn't want the attention.

"He is still very much private and prefers low-key celebrations where there aren’t a lot of photographers," the tipster added. "He doesn't like being in the spotlight. The whole affair would have been too much for him."

Rob, who stopped appearing in "Keeping Up with the Kardashians" back in 2013, "supported Kourtney from afar," according to the source. The 35-year-old reality star reportedly chatted with his family via FaceTime while they were in Portofino, Italy, for the wedding.

"He loves his sister very much and is so happy for her and Travis," the insider said. "He will celebrate with her in L.A."

Rob's mom and sisters also sent him photos and shared updates with him as he stayed stateside with daughter Dream, 5, whom he shares with ex-fiancée Blac Chyna.

Kourtney's wedding came just weeks after Kim Kardashian, Khloe Kardashian, Kylie Jenner and their mother Kris won in a defamation trial with Chyna.

The 33-year-old model, born Angela White, filed a lawsuit against Rob's mom and sisters, accusing them of defaming her and interfering with her contract with E! after the network did not proceed with a second season of "Rob & Chyna."

Kris denied any involvement in the network's decision to not greenlight Season 2 when she testified during the trial.

The Kardashians won after jurors determined that the family did not have a substantial effect on Chyna's contract or the cancellation of her reality show.

"The jury sent a clear message to Ms. White and her lawyer — I hope they are listening. Justice has prevailed," Michael Rhodes and Michelle Doolin, trial counsel for the Kardashian-Jenner family, said in a statement to Entertainment Weekly earlier this month.

Chyna's lawyer plans to appeal the case. Meanwhile, her revenge porn lawsuit against Rob is ongoing with the trial set to start in June.