Sun's out, bump's out!

Parenthood star Erika Christensen proudly flaunted her growing baby bump in a blue-and-white printed Volcom one-piece while on vacation in Hawaii.

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The pregnant actress, who is expecting a baby girl, hiked up mountains, swam in crystal blue waters and even posed on a tree swing during her time in the tropical locale.

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Alright…goodbye #Hawaii. You're perfect.

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This will be the first child for the 33-year-old actress and her husband, Cole Maness.

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"Very pleased to be joining the ranks of parents soon… 7 months pregnant and the baby girl is getting bigger," she wrote.

Congrats to the beautiful mom-to-be!