The rapper tweeted the news on Thursday (March 1), adding a picture of the ring in question.
"She Said Yes!!!" he wrote.
Rose added that she was thrilled to receive the proposal.
"He has made me the Happiest Woman in the World!!!!" she tweeted.
Rose recently insisted that Khalifa is "perfect" in her eyes.
> Wiz Khalifa: 'I'll invite everyone to Amber Rose wedding'
Listen to Rose and Khalifa's new single 'Fame' below: