Officially the worst stunt casting ever

It was announced today that Kelly Osbourne would take on the role of Mama Morton in the West End run of Chicago. Leaving aside the fact that she's whiny and annoying, ungrateful and stupid, she's also devoid of any acting talent and she can't really sing. But let's look at some previous Mama's here:

Marcia Lewis: Born 1938
Roz Ryan: Born 1951
Angie Stone: Born 1961
Jennifer Holliday: Born 1960
Debra Monk: Born 1949
Diane Langton: Born 1947
Lynda Carter: Born 1951
Alison Moyet: Born 1961

While I don't have the exact dates they performed in the revival, it would have been in the last decade. So the youngest any of them could have been at the time they took on the role is 36. Do we agree with that? Yes?

Then can you tell me why Kelly FUCKING Osbourne, who turns 23 on the LAST day of her 10 week run as Mama Morton, has been given the role? Someone? Anyone? Please just close this fucking show already. What was once one of the most starkly brilliant revivals is now in desperate need of being put out of its misery.