Uh-oh, looks like there's some serious trouble in Tinseltown.
Kim Kardashian West reportedly avoided Beyoncé Knowles at the MTV Video Music Awards on Sunday.
The Keeping Up with the Kardashians star, 33, still hasn't forgiven the XO hitmaker, 32, who is married to Jay Z, for skipping her wedding to Kanye West in Florence, Italy in May, and didn't make any effort to speak to her at the ceremony in Los Angeles on Sunday night.
A source told gossip website RadarOnline.com: "Kim blames Beyoncé for Jay Z skipping their wedding. Kanye considered Jay family, and the last minute decision for him to not come to their wedding was extremely selfish."
The insider added: "[Kim] thinks that Beyoncé has always been very arrogant and aloof around her. Kim always made a real effort to get to know her and Jay, but she was always left with a very cold feeling. Beyoncé made Kim feel very insecure and that isn't something that she is used to."
A source previously said that Beyoncé and Jay Z decided to go to the Hamptons instead of attending the wedding, as they thought it wasn't classy enough for their brand.
The friend claimed: "They are guarding like hell their status. Beyonce wasn't going to allow a Kardashian to socially climb her. And Jay didn't want Kanye with Kim - he thinks it's bad for business. I think Jay lost a little respect for Kanye there."