"The Osbournes" and "Dancing With the Stars" personality will offer up style comments following major red carpet events alongside Rivers and stylist George Kotsiopoulos on E!
Ozzy Osbourne's daughter will make her debut on the show on Monday to comment on the fashions at Sunday's Emmy Awards.
She'll then appear weekly on the stylish show beginning September 10.
A thrilled Osbourne said, "Its' a dream come true... and I can't f---ing wait to work with Joan Rivers every week. How amazing is my life right now?"
Osbourne has also just landed her first major film role in "Should've Been Romeo."