By Dana Flax
Peggy Olson has hit the big time!
According to TV Guide, Elisabeth Moss of "Mad Men" has been tapped for a guest role on NBC's new nurse drama "Mercy."
Playing Lucy Morton, a cancer patient who has lost her hair from treatment, Moss will don a scarf to mask her baldness.
If her character takes any cues from the newly gay-made-over Peggy, it'll probably be one fabulous scarf.
"Mercy" airs on NBC at 8 p.m. on Wednesdays. Moss' episode will air on Nov. 4.
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