In pictures from the set of the US hit, the 79-year-old looked much younger than her years as she shot scenes on a beach.
Dressed in a pair of black skinny jeans and a turquoise pashmina over her beige top, Academy Award winner Jane looked elegant.
Her blonde tresses had been tousled by the wind but the star was as stunning as ever.
She was joined by Friends actress Lisa Kudrow as the two appeared to hunt for treasure with a metal detector on the sand.
In one photo, Jane could be seen holding what appears to be a belly dancing coin belt or an embellished bikini top.
Meanwhile, Lisa, 53, was pictured in a colourful tropic print sundress and a denim jacket, featuring metal studs, over the top.
She was seen holding a parasol with a dragon motif on it in one hand and the metal detector in the other.
Season three of the drama is set to be dropping on Netflix later this month and will see her reprise her role as retried cosmetics magnate Grace Hanson.
Lily Tomlin will be returning as Frances “Frankie” Bergstein, a hippie art teacher.
The show will pick up on the lives of the duo as they continue to deal with the fallout of their husbands abandoning them to begin a relationship together.
Along with Lily, 77, and Jane, Grace and Frankie also stars Martin Sheen and Sam Waterson.
Grace and Frankie season 3 will air on Netflix on March 24.