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When The Real Housewives of Beverly Hills hits Amsterdam, get ready for a fight like you've never seen before.

Star Kyle Richards sat down with E! News' Ali Fedotowsky and relived the moment Lisa Rinna and Kim Richards had an intense face-off while on vacation together. The showdown—and glass-throwing incident—happens tonight on the Bravo reality series.

"Lisa said something that set my sister off and [Kim] kind of said something that really, really upset Lisa Rinna and she just lost it. She kind of lunged across the table and next thing you know everyone is screaming. And then she picked up a glass, threw it—smash—glass went flying everywhere," Kyle told us.

THE REAL HOUSEWIVES OF BEVERLY HILLS, Season 5, Cast

Michael Larsen/Bravo

This sent her running. "I suffer from anxiety," she said. "I just completely fled. That was my instinct, to get out of there. I freaked out because I got scared."

During this season of The Real Housewives of Beverly Hills, new cast member Lisa Rinna has been talking to the various ladies about Kim's sobriety after a poker party at Eileen Davidson's house. She took her concerns—and idea for an intervention—around town and when Kim found out, she wasn't happy and confronted her while on a trip to Calgary, Canada. And then again in Amsterdam.

"Everybody was a mess," Kyle said.

Does Kim need an intervention? Not according to Kyle, but the two aren't on the best of terms and Kyle said she's not sure where Kim stands with her sobriety currently. "I hope she's OK, I think she is," she said.

The two did see each other at the reunion, but don't expect that to be full of hugs and kisses. "The reunion was worse than Amsterdam," Kyle told us. "I didn't leave my bed for two days after the reunion. I couldn't go anywhere. It was just so upsetting."

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

(E! and Bravo are both part of the NBCUniversal family.)