Gillian Anderson, 56, looks sensational as she shows off her midriff in a black bikini during a Mexican getaway

Gillian Anderson looked incredible as she enjoyed a day at the beach during her getaway in Tulum, Mexico, on Saturday.

The 56-year-old actress showed off her fit physique in a strapless black bikini top and cheeky string bottoms while basking in the sun.

She wore her long blonde hair into a messy bun and was at one point seen walking barefoot on the sand.

She was on holiday with her three children (daughter Piper Maru Klotz, 30, sons Oscar Griffiths, 17, and Felix Griffiths, 16).

The X-Files alum, who discussed her ‘complicated relationship’ with former co-star David Duchovny earlier this month, apparently enjoyed snorkelling in the clear, blue waters during their trip.

Gillian Anderson, 56, looked incredible as she enjoyed a day at the beach in Tulum, Mexico, on Saturday.

At one point, he was seen walking barefoot on the sand.

The Crown star was makeup-free and showed off her natural beauty and glowing skin.

She chose not to wear any jewelry on the beach day and wore a few elegant chain bracelets on her wrist.

At one point, he wore gold-rimmed sunglasses to protect his eyes from the sun while wading through the water.

She was later seen chatting with someone on shore, frolicking in the warm Caribbean waters and giving someone shade.

When she wasn’t frolicking in the water, she was wandering around on the warm, white sand.

His tropical getaway came after he opened up about his sex life and stressed the importance of ‘fantasy’ in the bedroom.

During a September episode of The Modern Love Podcast, Anderson talked about love and relationships when she was single, admitting that she wished she had been more active in the bedroom.

He touched on the importance of sexual fantasy and admitted that there were times in his life when he thought he could be ‘more active in the field of sex’.

The actress showed off her fit physique in a strapless black bikini top and cheeky string bottoms as she soaked up the sun.

The X-Files alum appeared to enjoy snorkeling in the clear, blue waters as he was seen carrying a snorkel mask during their trip

The Crown star was makeup-free and showed off her natural beauty and glowing skin. She opted not to wear any jewelery on the beach day and wore a few dainty chain bracelets on her wrist.

At one point, he wore gold-rimmed sunglasses to protect his eyes from the sun while wading through the water.

‘There have definitely been times in my life between relationships where I’ve been single and suddenly decided I could be more active in the sex arena than I was.’

He added: ‘But I know I feel like it’s not something I haven’t done. In a way, this was something that wasn’t good for me at all.

‘But I think people can make it a habit. ‘I think it’s an easy habit to get into and kind of get put in a box.’

During the podcast, she also talked about how sexual fantasies in a relationship are “healthy” and can “bring people together.”

‘I think fantasy life is really healthy in a relationship,’ she said. ‘What I mean is, some people can’t climax without a fantasy to get them there.’

‘I would also say that sharing this with a partner is an incredibly healthy thing to do and can potentially improve the sex a couple can have,’ Anderson continued.

He added: ‘If you feel like you can put yourself in a vulnerable enough position to share this, because these are very private details and can only bring people together.’

She also revealed how doing intense yoga daily helped her transform her love life.

She was later seen chatting with someone on shore, frolicking in the warm Caribbean waters and giving someone shade.

She looked in high spirits as she enjoyed a Mexican holiday with her three children

When he wasn’t frolicking in the water, he was strolling on the warm white sands.

She tied her long blonde hair into a messy bun

Anderson was seen walking on water and soaking up the sun alone. At one point, he was seen coming ashore wearing a snorkel mask.

‘There was a period when I was single for a while,’ he recalled. ‘I was living in Los Angeles. I was in between relationships and maybe early 30s. And I started doing really intense Ashtanga yoga regularly.’

She added: ‘I felt more connected to myself and my body than I had ever felt before in my life.’

She said as she started yoga training more regularly, people started turning to her.

‘There was a time when people suddenly jumped out of woodworking.’