Lisa Snowdon is "on the mend" after being diagnosed with viral meningitis.
The 38-year-old DJ and model, who appears in Marks & Spencer's new Christmas advert and hosts the Capital Radio Breakfast Show with Johnny Vaughan, fell ill after turning on the Christmas lights in London's Bond Street.
A spokeswoman for the star said: "Lisa was taken to hospital on Friday and has been diagnosed with viral meningitis. She is now on the mend but is unlikely to return to the Breakfast Show next week."
Lisa, who got to the final of BBC One's Strictly Come Dancing in 2008, has dated Hollywood heart-throb George Clooney.