Gillian Anderson, 56, appears sensational as she showcases toned midriff in a black bikini throughout Mexico getaway

Gillian Anderson looked incredible while enjoying a beach day during her getaway in Tulum, Mexico on Saturday.

The 56-year-old actress showcased her fit physique in a strapless black bikini top paired with cheeky string bottoms while soaking up the sun.

She tied up her long, blonde hair into a messy bun and was seen barefoot, strolling through the sand, at one point.

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

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

The Crown star was makeup-free and showcased her natural beauty and radiant skin.

For her beach day, she opted out of any jewelry and wore several, dainty chain bracelets on her wrist. 

While wading in the waters at one point, she threw on a pair of gold-framed sunglasses to shield her eyes from the sun. 

She was later seen seemingly chatting with someone on the shore while she frolicked in the warm Caribbean waters and giving her shades to someone. 

When she wasn’t frolicking in the waters, she strolled on the warm, white sands. 

Her tropical getaway comes after she opened up about her sex life and highlighted the importance of ‘fantasy’ in the bedroom. 

On an episode of The Modern Love Podcast from September, Anderson admitted she wishes she was more active in the bedroom when she was single as she discussed love and relationships. 

She touched on the importance of sexual fantasy and confessed that there had been times in her life where she thought she could have been more ‘active in the sex arena.’ 

‘There’s certainly been times in my life between relationships when I was single and suddenly decided that, actually, I could be more active in the sex arena than I was.’ 

She added: ‘But I know that place of feeling like it wasn’t something that I wasn’t doing. It was something that wasn’t doing to me, you know, in some way. 

‘But I think people can get in the habit of that. I think it’s an easy habit to get into, and just kind of 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 a fantasy life in a relationship is really healthy,’ she said. ‘I mean, some people can’t reach climax without a fantasy helping to get them there.’ 

Anderson continued: ‘I would also say that sharing it with one’s partner is an incredibly healthy thing to do and can potentially enhance the sex that a couple can have.’

She added, ‘If you feel that you can put yourself in a vulnerable enough position to be able to share it, because they’re very intimate details, and it can only bring people together.’ 

She also revealed how practicing intense yoga on a daily basis helped her change her love life. 

‘There was a period of time I’d been single for a while,’ she recalled. ‘I was living in Los Angeles. I was between relationships and maybe early 30s. And I just started to do really intense Ashtanga yoga on a regular basis.’

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

She said that once she started yoga training more regularly, people tended to gravitate towards her. 

‘There was a period of time where people were just popping up out of the woodwork.’