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The singer has been attending a Beverly Hills clinic in a bid to detox her system.
A source at the facility told The Mirror: "Cleansing a few times a week gets rid of lingering stuff in the colon.
"Britney's had the treatment before and says it makes her feel great, more upbeat and energetic."
Now reports that the 26-year-old was also photographed leaving a cosmetic dentistry office earlier this week, sparking speculation that she is having work done on her teeth.
> Spears to appear at Kids' Choice Awards?
