Hilton Hotel heiress Paris Hilton is grieving the loss of fellow Hollywood socialite Casey Johnson. Johnson, the 30-year-old daughter of New York Jets owner Woody Johnson and heiress to the Johnson & Johnson empire, was found dead in her Los Angeles home early Monday. She leaves behind a 6-year-old daughter Ava and “fiancee” Tila Tequila.

Casey is also being remembered by her famous pals, like Hilton, who grew up with the blonde outside Los Angeles.

“God has another Angel by his side. Casey, we all Love and Miss you and know that you are in a better place. R.I.P…..”

“I feel so sad right now, my heart is in pain. Just lost a longtime friend. My heart goes out to her family. R.I.P. Casey Johnson Love you :(…..” Paris Tweeted in the hours after Johnson’s death. Hilton later added, “In bed crying, looking at baby pictures of Casey, Nicky and I. I feel so upset. I feel like I’ve lost a sister. My heart is broken. Miss her….”