Araya Diaz/WireImageNot every one of Beverly Hill's hottest housewives was smiling while celebrating the premiere of their newest season.
During the Season 6 premiere party for Bravo's Real Housewives of Beverly Hills Thursday night at the W Hollywood, tensions were high between some of the dueling stars.
An eyewitness told E! News Eileen Davidson snubbed Lisa Vanderpump in a subtle run-in on the red carpet.
"Lisa said hello to Eileen on the carpet and Eileen ignored her," the eyewitness said. Attendees believe it had to do with unresolved drama from the show, though the cause of conflict is currently unknown.
As for Vanderpump's very own frenemy Brandi Glanville, the former BFFs avoided each other entirely.
"They kept their distance," the insider added. "There's no love lost there."
Regarding Hollywood sisters Kim Richards and Kyle Richards, their personal conflicts may have finally subsided.
"They seemed okay," said the eyewitness, who added that the duo had a good night with no sign of tension or drama.
Kim Richards, who was arrested for public intoxication in April, did not drink while at the party, according to the insider.
Beverly Hills newcomer Erika Girardi was ready to get the party started at her first premiere bash as she rolled in with an impressive entourage. "She was, like, eight [people] deep," the insider described.
However, former Dutch supermodel Yolanda Foster didn't roll in at all. The insider told E! she walked the red carpet, but did not attend the party. Gigi Hadid's mom has had a tough week considering, to the surprise of her co-stars, she announced her separation from her husband of four years, David Foster, on Tuesday just hours before the Season 6 premiere.
"Sadly we have decided to go our separate ways. We've shared nine beautiful and joyous years together and during that time we experienced love, friendship, and the inevitable challenges that come with managing a marriage, careers, blended families and health issues," the couple told E! News in a joint statement.
—Reporting by Beth Sobol
For more on Yolanda and David, watch E! News tonight at 7 and 11, only on E!