They were band mates for nearly ten years, after Girls Aloud was formed in Pop Stars: The Rivals.
But it seems that there is no love lost between Cheryl, 34, and Sarah Harding, 35, as the former dished out the ultimate A-list snub – by unfollowing Sarah on Twitter.
According to The Sun on Sunday, the brunette beauty – who has become a mother for the first time with Liam Payne – unfollowed the blonde bombshell as recently as last week.
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Snubbed: According to The Sun on Sunday, Cheryl – who has become a mother for the first time with Liam Payne – unfollowed Sarah Harding on Twitter
Having doubts: Sarah is reportedly set to star in Celebrity Big Brother’s new series, but has been left questioning her decision to take part
Although the reason has not been confirmed, the incident happened as Sarah prepares to enter the Celebrity Big Brother house.
MailOnline has contacted representatives of Cheryl and Sarah for comment.
Sarah was previously said to be doubting her decision to sign up for the fly-on-the-wall show, after claims that she embarked on a ‘wild and sexual’ six-week affair with Danny Dyer five years ago emerged.
Concerns: It’s claimed the former Girls Aloud star is questioning her decision, after details of her alleged six-week affair with Danny Dyer have emerged
The singer had previously been keeping a low profile, and found herself being thrust back into the spotlight after the rumours came out.
According to The Sun, a source has claimed to the paper: ‘Sarah is not sure if she feels ready.
‘She has been enjoying a career out of the spotlight recently and is not sure she wants to give up her low-key presences just yet.
‘Sarah is not 100 per cent sure she wants to go through it all again.’
MailOnline has contacted a representative for Sarah.
Following in their footsteps? Sarah is said to be in the running to star on Celebrity Big Brother’s next series – it’s last featured the likes of Spencer and Heidi Pratt pictured above
Having found fame with Girls Aloud, after winning a place in the band on Popstars: The Rivals, Sarah enjoyed a lengthy career in the public eye, before the girls called time on the band a decade after first getting together in 2002.
Since then, she has pursued her own solo career and turned her attentions to acting.
And her role in 2012 flick Run For Your Wife has now come to light once more, following rumours that Sarah had struck up an affair with EastEnders star Danny, 39, on set.
It’s claimed that she hadn’t known Danny had a long-term partner at the time.
A source told The Sun: ‘For a while they were head over heels and had a wild, sexual relationship. He fell in lust with her.’
Previous success: Sarah enjoyed a lengthy career in the public eye with Girls Aloud, before the girls called time on the band a decade after first getting together in 2002
They went on to claim that Danny and Sarah had become an item, adding: ‘She’s really not the kind of girl to get involved with someone with a partner – things would never have gone so far.’
Danny is alleged to have told Sarah he was single and living with his father in Canning Town at the time.
Sarah’s representative refused to comment when contacted by MailOnline, while a representative for Danny has been approached.
Rumours of their past fling comes just days after it had emerged that Danny’s wife Joanne, 40, had ‘sent him packing’ from their home.
Past fling: It’s claimed Sarah had struck up an affair with EastEnders star Danny, 39, on set of their movie Run For Your Wife (pictured above at the premiere in 2013)
It was reported last week that Danny has been living in a hotel in Hertfordshire while he films EastEnders, despite only living 19 miles away.
Although, The Mirror has since reported that Danny was kicked out by his spouse, when she discovered he had been texting friends who she deemed to be a bad crowd.
Danny and Joanne had tied the knot in September last year, following her proposal to him in March 2015.
They share three children together; daughters Danni and Sunni and son Arty.
Long-term love: Danny had married his wife Joanne Mas in September last year, following her proposal in March 2015 – they share three children together