Actress Naomi Watts, 54, flaunts her super-fit figure in St Barts

Naomi Watts, 54, flaunts her fit physique in a daring bikini as she packs up the PDA with her partner Billy Crudup on the beach in St Barts.

Naomi Watts flaunted her fit figure as she hit the beach in St Barts with her partner Billy Crudup and friends on Saturday.

The Australian actress, 54, looked to be in the best shape of her life when she stripped down to an orange triangle bikini top and black pants.

The Mulholland Drive star completed her look with a pair of stylish RayBan sunglasses, various bracelets, a necklace, rings and earrings.

Naomi Watts, 54, (pictured) flaunted her fit figure as she hit the beach in St Barts with her partner Billy Crudup and friends on Saturday.

Naomi Watts, 54, (pictured) flaunted her fit figure as she hit the beach in St Barts with her partner Billy Crudup and friends on Saturday.

Naomi and fellow actor Billy, 54, spent a lot of time packing up the PDA between swims, playfully snuggling in the sand.

The lovebirds were joined by Naomi’s son Kai, 12, as well as his friend, Australian Survivor host Jonathan LaPaglia, 53, his wife Ursula Brooks, 48, and daughter Tilly, 24.

Naomi and Billy have been on holiday in St Barts where they were seen arriving for the UNICEF Winter Gala on Thursday.

Naomi and fellow actor Billy, 54, (left) spent a lot of time packing up on the PDA between swims, playfully snuggling in the sand.

Naomi and fellow actor Billy, 54, (left) spent a lot of time packing up on the PDA between swims, playfully snuggling in the sand.

Naomi looked to be in the best shape of her life as she stripped down to an orange triangle bikini top and black pants.

Naomi looked to be in the best shape of her life as she stripped down to an orange triangle bikini top and black pants.

The annual philanthropic extravaganza is held to raise funds in support of UNICEF projects around the world,

Naomi has been dating Billy since 2017, when they met on the set of the movie Gypsy, following her split from Liev Schreiber the previous year.

They regularly support each other at each other’s events, most recently at the launch party for their new brand Stripes and ELLE’s 29th Annual Women in Hollywood Celebration, both in October.

The Mulholland Drive star completed her look with a pair of stylish RayBan sunglasses, various bracelets, a necklace, rings and earrings.

The Mulholland Drive star completed her look with a pair of stylish RayBan sunglasses, various bracelets, a necklace, rings and earrings.

Naomi smiled and threw her hands in the air as she walked towards the shore.

Naomi smiled and threw her hands in the air as she walked towards the shore.

The lovebirds were joined by Australian Survivor presenter Jonathan LaPaglia, 53, (far right), his wife Ursula Brooks, 48, (centre) and their daughter Tilly, 24, (far right, behind Jonathan )

The lovebirds were joined by Australian Survivor presenter Jonathan LaPaglia, 53, (far right), his wife Ursula Brooks, 48, (centre) and their daughter Tilly, 24, (far right, behind Jonathan )

Naomi and Liev share two children, Sasha, 13, and Kai, 12.

Billy shares eighteen-year-old son William Atticus Parker with actress Mary-Louise Parker.

Meanwhile, Liev, 55, has been dating model Taylor Neisen, 30, since he split from Naomi.

The couple have been on holiday in St Barts where they were seen arriving for the UNICEF Winter Gala on Thursday.

Billy and Naomi were all smiles as they snuggled up on the rocky shore.

The couple have been on holiday in St Barts where they were seen arriving for the UNICEF Winter Gala on Thursday.

Naomi has been dating Billy since 2017, when they met on the set of the movie Gypsy, following her split from Liev Schreiber the previous year.

Naomi has been dating Billy since 2017, when they met on the set of the movie Gypsy, following her split from Liev Schreiber the previous year.

They regularly support each other at each other's events, most recently at the launch party for their new brand Stripes and ELLE's 29th Annual Women in Hollywood Celebration, both in October.

They regularly support each other at each other’s events, most recently at the launch party for their new brand Stripes and ELLE’s 29th Annual Women in Hollywood Celebration, both in October.