Billie Eilish is grieving the loss of her dog Pepper.

The singer, 21, recently announced the passing of her beloved pet in a moving tribute on Instagram.

"Pepper. My life long best friend," she wrote in a July 23 post. "I will see you again someday sweet girl. You made it 15 years you f--king beast. :') I love you. Rest easy mama, I'll miss you forever. This is a really hard day."