Cheryl appeared to make a dig at bandmate Nadine Coyle as she moaned about the mess on the Girls Aloud tour bus in a behind-the-scenes video.
The singer filmed a clip showing how the singers were living while the group were on the road for their 2008 Tangled Up tour.
Cheryl, 36, walked through the bus pointing out the mess in the kitchen, including dirty crockery in the sink and a half-drunk bottle of vodka.
After going upstairs, she started pointing out the bandmates' bunks and laughed at the mess in her own bed.
She pulled out empty crisp packets, a secret stash of chocolate and piles of cuddly toys.
Cheryl then moved on to Nadine's bed, showing the singer didn't even have a quit in the bunk and seemed to have just piled her space with junk.
She said: "She doesn't even have a quilt in there... I thought mine was bad, but she's..."
The singer also appeared to make a dig at bandmate Sarah Harding during filming on the bus.
Cheryl walked past her bunk and said Sarah "hasn't slept in [it] yet".
Although Cheryl didn't explain what she meant, it appeared to be a reference to Sarah's partying - as she became famous for her wild antics during her time in the band.
After Girls Aloud split, Sarah later went public with her personal problems which included a battle with booze and sleeping pills, and depression.
She went to rehab in 2011 to address her issues with alcohol.
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