Real Housewives of Beverly Hills star Taylor Armstrong, 40, had a booze-filled blowup with Brandi Glanville while filming in Ojai, California, sources tell the new issue of Us Weekly (out now).

Glanville, 39, had previously accused Armstrong of exploiting her late husband Russell's suicide with the tell-all Hiding From Reality. While in Ojai, the former model announced she'd signed a book deal partly about her 2009 split from Eddie Cibrian -- a revelation that sent Armstrong into a tizzy.

"Taylor screamed that Brandi was a hypocrite," an insider says.

Another source adds that Armstrong "has been having drinking issues" while filming Season 3 of the Bravo hit.

Though a source insists "Taylor is getting better after Russell's death," she's still drowning her sorrows. A witness at West Hollywood's Boa on May 17 tells Us she was "wasted and crawling into the ladies' room!"

For more on Armstrong's tantrum, watch this week's Hot Stuff video, as told by Senior Editor Ian Drew and special guest, publisher Victoria Lasdon Rose!

Also in the roundup: penniless Levi Johnston moves in with his mom, Jillian Michaels adopts a baby girl, and much more!