Heiress Casey Johnson Dies

Johnson & Johnson heiress Casey Johnson has died.

The 30-year-old socialite was in the tabloids recently for being engaged to reality star Tila Tequila.

She ran with a rich and troubled crowd that included Paris and Nicky Hilton, Lindsay Lohan, Nicole Richie and Courtenay Semel, with whom she had a tumultuous romantic relationship.

Johnson had been in and out of rehab in recent years. She adopted a baby daughter in 2007, then fought her own mother to retain custody of the child.

She has said she turned down a starring role on the former Fox reality hit The Simple Life with Paris Hilton. The role later went to Richie.

Johnson's body was discovered in Los Angeles Monday morning. One of her last tweets, on Dec. 29, reads: "sweet dreams everyone... I'm getting a new car.. Any ideas?"