This week on "The Real Housewives of Beverly Hills," Kyle Richards was disinvited from her niece Nicky Hilton's wedding because of some family drama that she wasn't willing to talk about. But at the last minute, the bride changed her mind and Kyle had to borrow a dress from Lisa Vanderpump so she could attend the wedding. Kyle's husband, Mauricio, and their two youngest daughters were not invited, and while Kyle refused to talk about it, a report claims that it had something to do with business.

According to E! Online, Mauricio used to work with Kathy Hilton's husband, Rick Hilton, and a source claims that Rick and his team wouldn't make Mauricio a partner even though he has been working there for years and contributed "a lot of success" to the company, so he left. Because of this, the source added that Mauricio is not welcome at Hilton events.

Meanwhile, another source told the website that the problem between the two businessmen started when Mauricio covertly set up his own company and informed Rick through email. The two are said to have had an agreement that they would not go after each other's agents, but Mauricio allegedly tried to poach Rick's staff.

The insider added that another reason why Kyle was disinvited was because of Kyle's new TV pilot that is based on her life growing up with her sisters and that Kathy wasn't thrilled with the idea at all. She allegedly sent Kyle a legal notice without any warning, and the source said that Kathy and Kyle's relationship "isn't getting any better soon."

Next week, it looks like Kyle will be coping with more drama and this time, it involves her other sister, Kim. In the episode titled "Horsing Around," Kyle returns from her European vacation and is greeted with more bad news about Kim.

Kim had quite a year as she was arrested for public intoxication back in April and the star went to rehab shortly after, and the bad news is most likely connected to her struggles with sobriety. Meanwhile, Yolanda spends time with a new Housewife, and fans of the show will finally get to meet Erika Jayne. Lisa Vanderpump enlists Lisa Rinna's help to find the perfect mini horse for Ken's birthday present, and it looks like Lisa's beloved dog, Giggy, will have some competition as the Vanderpumps' number one pet.

"The Real Housewives of Beverly Hills" airs on Tuesdays at 9 p.m. on Bravo.