The 46-year-old actress was all smiles as she rocked the strapless one-piece, which showed off her svelte figure and toned legs.
She accessorized the summer look with sunglasses and what appeared to be a patterned swimsuit cover-up on her head, reported Us magazine.
Anderson had earlier admitted that she had insecurities through the years about her body.
"I don't know if I ever really felt beautiful. I always feel like I don't -- I don't really," she had said.