Demi Lovato Mourns Her Uncle's Death: 'We Are So Grateful You're at Peace Now'

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Demi Lovato has lost another loved one.

"Too much death," the 23-year-old singer tweeted on Saturday after learning that her Uncle Jeff had passed. On Instagram, she posted her favorite photo and wrote, "We are so grateful you're at peace now. Take care of Uncle Billy and Papa while you're up there."

WATCH: Wilmer Valderrama Reveals Secret to Demi Lovato Relationship

Lovato posted a similarly touching tribute to her Uncle Billy when he died in November. "Such a joyful man of God with a warm heart and incredible soul," she said at the time.

Just yesterday, the "Confident" singer Instagrammed a photo of her and Wilmer Valderrama's late dogs, Spawn and Buddy. "Missing our babies right now. #puppyheaven," she captioned the shot.

The couple had to say goodbye to their 8-year-old Doberman Pinscher in December, only a few months after Lovato lost her puppy, reportedly due to a coyote attack, in July.

Speaking of the couple, Lovato recently told ET that Valderrama had "slight hesitations" about their age difference. Find out what she had to say: