Michael Jackson's daughter Paris Jackson has left her family “worried sick” after her breakup with boyfriend Chester Castellaw, Radar Online reported Monday. Paris and Castellaw dated for almost a year but reportedly split in December.

“Paris is causing great concern for her family,” a source told Radar Online. “Ever since her breakup with Chester, she has become quite rebellious. They are starting to go through the same thing with her that they went through with Prince [Jackson] last year.”

The insider told the gossip website that Paris’ late-night parties post-split have distressed her family. The reason behind the breakup, however, remained unclear.

“She is staying out past curfew, hanging out with a group of people that seem to be misfits, and she is not listening to much that her grandparents Katherine and Joe say,” the source told Radar Online. “She hasn’t opened up to practically anyone about why she and Chester broke up.” 

The website reported, citing the source, that Paris is feeling the pressure of inheriting her dad’s property when she turns 18 in April. “She said that she cannot wait until her birthday. The first thing that she wants to do is get her own place,” the source said.

In October, it was rumored that Paris was getting married to Castellaw and was pregnant with his child. However, she dismissed the rumors on her Instagram account. Paris shared a photograph of herself on the social networking site, captioning it: "Thank you guys for reaching 200K followers! #loveyousomuch." She added, "P.S. I'm not married and no, I'm not pregnant lmao."