Scott Disick has reportedly returned to his partying ways at the Sundance Film Festival.

Scott Disick

Scott Disick

The 33-year-old reality TV star - who is the on/off boyfriend of Kourtney Kardashian - has been spotted at the Tao nightclub pop-up in Park City, Utah, and has also been partying at the house he has been renting in the local area.

A source told the New York Post newspaper: "He had a pretty wild party back at his house, where lots of girls were in his hot tub.

"He has only been out at night, and stays out till 7 a.m. partying and sleeps all day."

The claims come amid rumours Scott is desperately trying to rekindle his romance with Kourtney, 37, with whom he shares Mason, seven, Penelope, four, and a two-year-old son called Reign.

However, the couple previously split over Scott's excessive drinking and partying, and his behaviour at the annual film festival is unlikely to have helped his chances of reconciling with Kourtney.

A source recently explained: "He has been consistently on his best behaviour for the past two months. He's not been partying or drinking. This is the first time we've seen Scott be this good in a very long time. Yes, that is always something Kourtney wanted for Scott - to calm down and be at home."

Another insider, on the other hand, has suggested Kourtney is no longer interested in a relationship with Scott and is instead focused on her responsibilities as a parent.

A source said: "Kourtney is happy being a parent right now and that is her number one interest right now.

"She's not interested in being in a relationship with anyone. [Kourtney and Scott] have a wonderful relationship and are doing an amazing job at being good friends for their kids. There is nothing more to it than that right now."