Scott Disick Ditches Kris Jenner's Vegas Birthday Party in New 'KUWTK' Clip [VIDEO]

Did Scott Disick ditch Kris Jenner's birthday party? In a new clip from the latest episode of Keeping Up With The Kardashians, Jenner is set to celebrate her birthday with a club appearance in Las Vegas, but Disick is nowhere to be found. According to Us, Disick and "longtime partner" Kourtney Kardashian traveled to Las Vegas last November to celebrate his "quasi-mother-in-law" Jenner's 59th birthday. Reportedly, Disick had arranged for Jenner to appear at a club in honor of her birthday, but the new KUWTK clip makes it looks like Disick might not show up to the party.

In the preview video, Jenner hangs out with Faye Resnick and boyfriend Corey Gamble as she happily prepares to make her Vegas appearance. "I love the energy in Vegas and I love the way it feels to be here. It's exciting! I'm really looking forward to dinner tonight and then going to the club," Jenner says, but her mood changes when KUWTK co-star Malika Haqq asks where Disick might be, and Jenner has no idea. "I don't know," Jenner answers. "They were seen in another hotel and he doesn't know I know."

Jenner starts to get anxious that Disick might have ditched her birthday to go out partying on his own. "Scott's the one who set this appearance up," explains. "I still haven't even seen him and I'm getting a little bit nervous because I'm starting to get texts from people telling me that Scott's out and about, already drinking, and we haven't even gotten started yet!"

Things only seem to get worse as the evening progresses. In a different preview clip, Disick eventually stops by Jenner's birthday dinner, but he appears to be intoxicated as he loudly video chats with Khloe Kardashian's reported boyfriend French Montana. The tension between Jenner and Disick quickly escalates when she calls him an "a**hole."

Disick has publicly struggled with alcohol and substance abuse, recently undergoing a stint in rehab. People reports that Disick is due back soon for another round of treatment. "I'm not done. I plan to go back to this place[...]I'm a work in progress and anything that I can do to better myself, I'm trying," Disick said last March.