Elizabeth Hurley Feels 'Grateful' as She Celebrates Her 55th Birthday with a Bathtub Photo Shoot

Elizabeth Hurley stripped down to her birthday suit to ring in her 55th!

The star, who's never afraid to show some skin in a variety of sexy bikinis, posted a fun pic of herself kicking back in a bubble bath with her arms thrown over her head to celebrate another year around the sun.

"Happy Birthday to me 💗💗💗💗 This is the fifth birthday we’ve celebrated during lockdown amongst my little group- including my mother’s 80th and my son’s 18th," Elizabeth captioned the Instagram post. "Grateful to be happy & healthy and to have the best family & friends. Here’s hoping real life starts again one day 💗💗💗💗."

The actress and model's son Damian Hurley, 18, posted a sweet birthday tribute to his mom on Instagram in honor of her special day.

"happy birthday to my twin!! my partner in crime forever 🖤 i love you mama xxxxxx," he captioned the photo.

In the comments she replied, "I ❤️ you Baby."

RELATED PHOTOS: Bikini-Clad Celebs Over 50 Who Prove Age Is Nothing But a Number

Last year Elizabeth explained that she prefers opting for unconventional ways to keep her body toned. “I don’t work out, per se, but I am very active,” she told Extra. “I do a lot of exercise, but it’s really the gardening… cutting down a hedge, using my chainsaw to cut down a tree, logging, all of that stuff I do. So, I’m very active.”

Related: Elizabeth Hurley Shares How to Get Involved in Breast Cancer Awareness

She also likes to stay fit by doing hula hoop and swimming, which she has shared with fans on social media. “Hula hoop practice,” she captioned a picture wearing a tiny pink bikini from her swimwear line Elizabeth Hurley Beach as she posed with a red hula hoop around her middle.

The star's even been seen splashing around topless in a pool in Greece.

RELATED: Elizabeth Hurley and Look-alike Son Damian, 17, Bear a Striking Resemblance in Christmas Selfie

“Attempting to swim off the calories,” she wrote alongside the video.