Kehlani also turned to Twitter to discuss how Miller should have won, but added that Cardi was "absolutely deserving" and sticking with the trend, then deleted her comments.
She clearly had hopes the late star would pick up the Grammy and allegedly posted "trash", "fuck" and "literal bullshit" in three tweets on news of his loss, before thinking better of it and deleting them.
Grande has repeatedly paid homage to Miller since he died of an accidental overdose in September; she has posted photos and videos of him on Instagram and numerous songs on her new album, released on Friday, appear to be written about him.
The superstar went back on Twitter to later clarify her tweets after one social media user accused her of "shading" Cardi B.
After performing with Bruno Mars at last year's show, the Bronx rapper returned to deliver her own show-stopping set at Sunday's show.
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Ariana Grande shared her thoughts on the GRAMMYs, after they gave the award for "Best Rap Album" to Cardi B, instead of Mac Miller.
Leading the celebrations, Lil Kim wrote, "Thank U Jesus!"
But nothing could compare to the raw emotion she showed in her acceptance speech.
It was likely very poor timing on the "7 Rings" singers side of things when Ariana Grande tweeted out "trash" just has Cardi B won.
Wearing her dark locks straight down onto her bare shoulders, she took to the stage with husband, rapper Offset.
In a not so typical speech, she joked her nerves were so bad "maybe I need to start smoking w**d".