Kai Widdrington was spotted with Nadiya Bichkova on Sunday.

The Strictly Come Dancing professionals, who are currently taking part in the show’s arena tour, both wore facemasks and baseball caps as they rode an escalator alongside fellow Strictly star Aljaž Škorjanec.

It follows reports that Nadiya, 32, and Kai, 26, are ‘growing close’ in the wake of her split from her fiancé Matija Škarabot.

Spotted: Nadiya Bychkova, 32, and Kai Widdrington, 26, kept a low profile when they were spotted out together on Sunday

Spotted: Nadiya Bychkova, 32, and Kai Widdrington, 26, kept a low profile when they were spotted out together on Sunday

Out and about: The Strictly Come Dancing professionals, who are currently taking part in the show's arena tour, both wore facemasks and baseball caps

Masked-up: Both stars covered their faces with masks

Out and about: The Strictly Come Dancing professionals, who are currently taking part in the show’s arena tour, both wore facemasks and baseball caps

Nadiya was seen with her hair in a loose, blonde style. She also wore an all-black chic look without her engagement ring.

Kai combined his beige cap and a white zip-up jacket with black bottoms.

As they both sat down, Nadiya held her phone in her right hand and bowed as they stepped onto the moving staircase.

MailOnline reached out for comment to Strictly Star representatives.

Pals: The pair rode an escalator alongside fellow Strictly Come Dancing pro dancer Aljaž Škorjanec

Pals: The pair rode an escalator alongside fellow Strictly Come Dancing pro dancer Aljaž Škorjanec

Growing close: It follows reports that Nadiya and Kai are 'growing close' in the wake of her split from her fiancé Matija Škarabot

Growing close: It follows reports that Nadiya and Kai are ‘growing close’ in the wake of her split from her fiancé Matija Škarabot

The Sun claimed Nadiya earlier in the week – Kai has behaved ‘raising eyebrows’ behind closed doors.

The publication was told by a source that AJ and Kai were very close and had an electric chemistry during the series. It has raised eyebrows because Nadiya’s flirty nature is so charming.

Also, the newspaper claims the two had dinner in Birmingham earlier this week during their tour.  

No ring: Nadiya was not wearing her engagement ring when she stepped out on Sunday

Nadiya didn’t wear her engagement ring on Sunday. 

Oh dear: According to reports, Nadiya and Kai's behaviour has been 'raising eyebrows' behind-the-scenes

Ah dear! According to some reports, Kai and Nadiya’s behavior has been “raising eyebrows” behind-the scenes

Chic: Nadiya wore her blonde hair loose and wore a chic all-black look and was not wearing her engagement ring

Chic: Nadiya wore her blonde hair loose and wore a chic all-black look and was not wearing her engagement ring

One witness claims that they went to a bar and chatted for about two hours, before returning to their hotel.

After Newly-single Nadiya was seen with her engagement ring on the left as she left Birmingham’s Malmaison Hotel for Strictly Come Dancing, this is the perfect moment.

It was only the previous night that the ballroom professional ditched her sparkling band following her split from her fiancé Matija.  

Following her divorce, Dan Walker (44) became her ‘pillar strength and support’.

Casual-cool: Kai teamed his beige cap with a zip-up white jacket and black bottoms

Casual-cool: Kai teamed his beige cap with a zip-up white jacket and black bottoms

Dinner: The newspaper also claims that the pair enjoyed a dinner together in Birmingham during the tour earlier this week

Dinner: The newspaper also claims that the pair enjoyed a dinner together in Birmingham during the tour earlier this week

Single: The dancer is single after ending her engagement to Slovenian footballer Matija, 33, as exclusively revealed by MailOnline last week

Single: The dancer is single after ending her engagement to Slovenian footballer Matija, 33, as exclusively revealed by MailOnline last week

MailOnline revealed that she has ended her relationship with Matija, 33-year old Slovenian footballer.

Tuesday’s revelation revealed that Dan, Dan’s partner and host of BBC Breakfast, was there to support her throughout the split.  

According to sources close to Matija, the beautiful dancer confided in Dan following the breakup of her relationship with Matija.

Protecting her face: Nadiya lifted her hand to her face as she stood on the moving stairway

As she stood on the moving staircase, Nadiya raised her hand towards her face to protect her face. 

All in the details: The blonde bombshell was also toting a luxury black handbag

Head down: Kai bowed his head

It’s all in the details. The blonde bombshell also carried a black luxury handbag 

Dan and Sarah have been married for 21 years. They have three children.

MailOnline was told by a source that Dan and Nadiya had a strong bond. He has provided support and strength for Matija after their breakup.  

They were surprised by how close they got during Strictly. The two were inseparable, and they got along so well that it has continued to this day.  

According to another source, Dan also supported Nadiya through everything including her divorce, strengthening their partnership.

“He also became close with her mother, and she really loved watching their dance on Strictly.

“Dan and Nadiya have a special relationship that has helped them to move on in their new lives after the separation.

Close: Nadiya has been immersing herself in intense rehearsals for the tour this week, after her celebrity partner from last year's series, Dan Walker, 44, became 'pillar of strength and support' after her break-up

Close: Nadiya has been immersing herself in intense rehearsals for the tour this week, after her celebrity partner from last year’s series, Dan Walker, 44, became ‘pillar of strength and support’ after her break-up