Five months after her death, Joan Rivers has won her first Grammy Award.

The late comedienne’s daughter, Melissa Rivers, was on hand tonight to accept her mother’s award for Best Spoken Word Album for her reading of her final memoir, ‘Diary of a Mad Diva.’

melissa rivers and cooper

Melissa and Cooper with Joan’s posthumous Grammy.

“If my mother was here tonight, she would not only be honored and thrilled to win, she would most likely have it copied and on the air on QVC by 11,” Melissa, 47, said while accepting the award on Joan’s behalf.

Upon hearing of Joan’s posthumous Grammy win, her former ‘Fashion Police’ costar Kelly Osbourne shared the news on-air with fellow co-host Giuliana Rancic.

(Video Credit: Billboard)

While walking the E! Red Carpet with her 14-year-old son, Cooper, Melissa told Giuliana the win was “bittersweet” for her.

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“It’s a difficult moment,” she said, noting her mother had only been nominated for one previous Grammy. “It’s wonderful how loved she was and how she’s getting so much attention now, and people are really understanding what she’s about.”

(Video Credit: Billboard)

“Hearing Joan’s voice and the way she tells her stories, it is so amazing,” Giuliana, 40, told Melissa of the album.

“I wanted to share this with you and Kelly, we’re family,” Melissa added.