The former Pussycat Doll star says she always feels much better after she performs if she has had a lot to drink the night before.
The Right There singer told British Live magazine: 'My mother is half Russian and I can drink like a Russian. Some of the best shows I've done were with the worst hangovers.'
The 32-year-old, who was yesterday confirmed to be replacing Cheryl Cole on the judging panel of the US X Factor, added: 'You think you can't possibly crawl onto a stage but then you push yourself because you have to and with all the adrenaline, the dancing and singing, that hangover is history.'