Graham and Heizer are Whitman's TV mom and brother from the family dramedy \"Parenthood,\" which aired for six seasons from 2010 to 2015.

The trio have remained close since the show ended.

Whitman's \"Good Girls\" co-star Christina Hendricks, who recently tied the knot, took to the comments to share her congratulations for her friend. \"I'm so happy for you,\" she wrote.

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