As she arrived at Heathrow Airport, Cheryl was snapped without her £160,000 wedding band.
Instead, the 26-year-old was wearing a huge gold cocktail ring.
Girls Aloud star Cheryl kept the sparkler on when she touched down in LA.
'The trip was scheduled last month,' her spokesman tells the Daily Record.
'She is away for a week. We have no further comment to make.'
Earlier this week, husband Ashley, 29, was accused of cheating on Cheryl on two occasions in late 2008 with a secretary.
The Chelsea footballer, 29, is also alleged to have sent a series of photos and texts to the unidentified woman.
In January 2008, Cheryl was shaken when single mum Aimee Walton gave a tabloid interview claiming she had sex with Ashley in December 2007.
Where to next?
- Cheryl and Ashley's real relationship uncovered
- How to cope if your man's cheating
- Latest celeb pics