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Amanda Righetti

The Mentalist star Amanda Righetti looked chic in a black bump-hugging gown at the CBS 100 Episode Celebration of The Mentalist.

Righetti, who has also appeared in The O.C. is expecting her first child sometime this winter with her husband Jordan Alan.

Love her look? Righetti is wearing the Isabella Oliver Ruched Midi Dress ($169) paired with black heels and a chic clutch.

The 29-year-old actress is one of eight siblings — so she is undoubtedly ready for a full house!

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Photos: WENN unless otherwise noted