Kevin Federline has warned Paris Hilton to keep away from Britney Spears.

Kevin ran into the socialite at the launch of Las Vegas’ newest restaurant/club Lavo over the weekend. He issued Paris a stern warning urging her to leave his ex-wife alone because she does not need any bad influences in her life and he does not want her returning to her unstable lifestyle.

“It was quite a chilling warning. She was quite friendly and asked how Britney and the kids are but she won’t be asking again.”