Lila, Miley Cyrus' 2-year-old Yorkie mix, died Tuesday the singer announced via Twitter.
"My sweet baby girl has passed away," wrote Miley. "I have never been so hurt in my life. My heart has never been so broken."
The pooch, who just turned two in November, was one of six dogs (Ziggy, Floyd, Happy, Mary Jane and Penny Lane) adopted by Miley.
Heartbroken, the 20-year-old animal lover said she will "go MIA for a bit" to mourn her pup.
"Need some healing time. Thank you to everyone who has sent love my way. I need it."
Earlier this fall, Miley asked fans to pray for Lila when she was hospitalized for an undisclosed ailment.