How much more humiliation will Khloe Kardashian take?

Just three weeks after Star magazine revealed her husband, Lamar Odom, had a yearlong affair with 29-year-old Jennifer Richardson, another bombshell has dropped: She wasn't the only one!

Gorgeous brunette lawyer Polina Polonsky tells the magazine, on newsstands Wednesday, that she had a six-week affair with Lamar, 33, earlier this summer.

What's more, Breaking Celebrity News has learned she even passed a polygraph test regarding the claims!