US TV
WENN
Cuoco - who currently stars in The Big Bang Theory - was scheduled to appear in the May 14 finale of Grey's, but has since pulled out.
The actresses' rep stated that she was forced to pull out due to an unforeseen publicity commitment, but it has emerged that CBS may have been behind the decision.
A source reportedly told Entertainment Weekly: "They didn't want one of their biggest stars appearing on one of ABC's biggest shows."
Lucio, who played Caleb Nichol's illegitimate daughter Lindsay in The O.C., is now scheduled to take on the role.
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