Oct. 30, 2013 -- Lady Gaga has lost her dog of 17 years to cancer.
The "Applause" singer took to Twitter to announce the passing of her beloved dog Alice, after a battle with the disease.
"My puppy Alice died. We had to put her down, cancer ate away at a little angel. My daddy is so sad, we all are, lost a member of our family," she posted Tuesday.
To pay her respects, Gaga wore all black in London today, even sporting a black face mask and black hat.
Gaga tweeted some fond memories of her best friend.
"I remember her laying [on] my bed, she knew when I was sad, or when I was sick," she said. "I should have been there. I just pray Alice found her wonderland."
She elaborated on how tough it is being away in London and not being able to say goodbye.
"I love being an entertainer but it is so painful sometimes to be away from home, 17 years she held on, so many memories," she added.