Paul McCartney's wife Nancy Shevell, 57, shows off her sensational bikini body as she frolics on the beach in St Barts

She's got a figure befitting of a woman half her age.

And Nancy Shevell, 57, showed off her envy-inducing shape as she hit a beach in St Barts with family on Friday.

The wife of musical megastar Sir Paul McCartney, 74, looked great in a stylish navy two piece and wicker fedora.

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Looking good: Nancy Shevell, 57, showed off her envy-inducing shape as she hit a beach in St Barts with family on Friday

Looking good: Nancy Shevell, 57, showed off her envy-inducing shape as she hit a beach in St Barts with family on Friday

The beauty's slender shape glistened as she sauntered across the beach underneath the Caribbean sun.

Her brunette tresses fell from underneath her hat in beachy waves, and she covered her eyes with thick-rimmed shades.

Nancy's complexion looked unblemished and she appeared to be wearing a pale pink lipstick.

Age-defying: The wife of musical megastar Sir Paul McCartney, 74, looked great in a stylish navy two piece and wicker fedora
Age-defying: The wife of musical megastar Sir Paul McCartney, 74, looked great in a stylish navy two piece and wicker fedora

Age-defying: The wife of musical megastar Sir Paul McCartney, 74, looked great in a stylish navy two piece and wicker fedora

Safe hands: Keeping active, she played catch with an American football

Safe hands: Keeping active, she played catch with an American football

She's got it: Her brunette tresses fell from underneath her in beachy waves and she covered her eyes with thick-rimmed shades

She's got it: Her brunette tresses fell from underneath her in beachy waves and she covered her eyes with thick-rimmed shades

Eyes on the prize: Nancy kept her concentration as she prepared for the ball
Eyes on the prize: Nancy kept her concentration as she prepared for the ball

Eyes on the prize: Nancy kept her concentration as she prepared for the ball

Keeping active, she played catch with an American football, before frolicking in the shallows.

Cooling off, she waded out to her waist and ensured she wet her hair. She raised her hands in the air and looked to be enjoying splashing about.

Once she'd had enough in the ocean she returned to shore with a light jog through the surf.  

Making a splash: The beauty's slender shape glistened as she jogged through the surf

Making a splash: The beauty's slender shape glistened as she jogged through the surf

Me time: There was no sign of Sir Paul, who was pictured earlier in the week chatting with his daughter Stella as they floated lazily in the ocean
Me time: There was no sign of Sir Paul, who was pictured earlier in the week chatting with his daughter Stella as they floated lazily in the ocean

Me time: There was no sign of Sir Paul, who was pictured earlier in the week chatting with his daughter Stella as they floated lazily in the ocean

Having fun: She raised her hands in the air and looked to be enjoying splashing about

Having fun: She raised her hands in the air and looked to be enjoying splashing about

There was no sign of Sir Paul, who was pictured earlier in the week chatting with his daughter Stella as they floated lazily in the ocean. 

Nancy, meanwhile, remained on the beach in a navy vest top and matching leggings.

St Barts is a favoured holiday destination for the pair and they are frequently spied soaking up the sun during trips to the island.

That's the life: The attractive 57-year-old looked content as she stood waist deep in the water

That's the life: The attractive 57-year-old looked content as she stood waist deep in the water

Fighting fit: Her set swimwear clung to her impressive frame

Fighting fit: Her set swimwear clung to her impressive frame

Cheeky! Nancy showed off her derriere as she bent forward to put her hands in the water

Cheeky! Nancy showed off her derriere as she bent forward to put her hands in the water