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Baby's the boss! Pregnant Alyssa Milano showed off her growing baby bump in a selfie posted via Instagram on Friday.

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"The bump," Milano, 41, wrote. "#shortpeoplecarrybig #noitsnottwins." In the snapshot, the "Who's the Boss?" alum smiles as she cradles her belly. She looks flawless in a tight-fitting navy blue maxi dress and wears her brunette locks down.

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Us exclusively broke news last month that the Mistresses actress and her CAA agent husband David Bugliari, 33, are expecting their second child together. The couple -- married since 2009 -- are already parents to son Milo, 2.

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"Alyssa is so excited to be pregnant again!" a source told Us at the time. "She just recently started showing and has wanted to expand her family with David for a while."

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