Angie Harmon celebrated her birthday on the beach.

The actress showed off her fit physique as she rang in 45.

"Going for the best bday nap EVER... & then I couldn't sleep. Afraid of FOMO! #blessed #grateful #bestbdayever#mygirls #family," Harmon shared on Instagram.

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The "Rizzoli and Isles" actress shared several other snaps from her birthday trip.

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The single star seemed to be enjoying herself alongside her daughters.

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The 44-year-old actress and her husband of 13 years, former pro football player Jason Sehorn, announced their separation in 2014. The duo share three daughters.