Credit: ABC

Looks like Ellen Pompeo's baby girl, Stella, will have a new playmate on the set of Grey's Anatomy!

Jessica Capshaw
, who plays Arizona Robbins on the ABC medical drama, is expecting her second child, her rep confirms to She and husband Christopher Gavigan are also parents to 2-year-old son, Luke

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Capshaw, 33, the step-daughter to famed director Steven Spielberg, wed Gavigan, the CEO of nonprofit Healthy Child, Healthy World, in 2004.

She joined Grey's in 2009.