WATCH: Joan Rivers BASHES Jay Leno

Joan Rivers stopped by Bravo's "Watch What Happens Live" Thursday night to talk red carpet fashion, Whitney Houston, and Betty White -- but things heated up when Jay Leno was mentioned.Rivers, who has been in a feud with "The Tonight Show" since the early 80s when then-host Johnny Carson blacklisted her for leaving to host her own show, is just now breaking back into the Late Night scene. Hosts like Jimmy Fallon and David Letterman are ...

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