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Tori Spelling
has nothing to hide!

The "Beverly Hills 90210" star, who is pregnant with her 4th child, showed off her growing baby bump in a teeny orange bikini yesterday while relaxing at her Malibu home.

The 38-year-old was spotted reading "Belly Laughs," a pregnancy book by Jenny McCarthy, while laying out with adorable daughter Stella.

Tori's baby news came just five months after she gave birth to her 3rd child with husband Dean McDermott, daughter Hattie.

Check out Tori's growing belly in the gallery above!

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