Elizabeth Hurley - Hurley: 'Corporate Link Is Not A Secret'

The British actress is among the high-profile Twitter users who could face an official investigation for advertising goods on the microblogging site without disclosing their relationship with brands.

But Hurley is adamant her rave reviews of Estee Lauder products aren't deceptive - because she's been a public spokesperson for the firm for years.

In a post on her Twitter.com page, she writes, "It's hardly a secret that I work for Estee Lauder - I've modelled for them for 17 yrs (sic)! Love telling u about their products - they're the best."