United Kingdom, May 4 -- Lisa Vanderpump has urged fans to stop cyberbullying reality stars.

The 64-year-old TV personality has taken to social media to hit back at critics on social media, urging fans to "uplift" rather than "tear down" reality stars.

Lisa - who has appeared on a host of reality shows, including 'The Real Housewives of Beverly Hills ' and 'Vanderpump Rules' - wrote on Instagram: "To all of our wonderful fans: I'm so grateful for your passion and support for my shows. But I must say this-no one deserves to be bullied, harassed, or targeted online. The cast members are human beings, with real feelings, doing their best in a high-pressure environment. Healthy conversation is welcomed, but cruelty is not. Let's uplift, not...