The "Girls" writer-director-star-et cetera will make her debut on the show on March 8.
The HBO show's third season premiered on January 12.
Brooklyn-via-Cincinnati indie rock vets The National will make their first appearance as musical guest.
The group's latest "Trouble Will Find Me" was nominated for a Best Alternative Album Grammy, while "Mistaken For Strangers" -- the acclaimed documentary about the band -- will be in theaters in March.
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