The Voice star Blake Shelton felt the full fury of the voice of his jealous wife, Miranda Lambert, when the country music duo attended the Grammys. An insider tells Star that Miranda closely watched handsome hubby Blake during the Feb. 12 awards ceremony at the Staples Center in L.A. — and when he got chatty with hot pop superstars Lady Gaga and Rihanna, it infuriated her.

"Miranda is extremely jealous and possessive of Blake, and she got very rude when they met Gaga at the awards," says the insider. "When Blake went to sit beside her, Miranda basically pushed him over so she could sit between them.

"And when he tried to lean across to engage Gaga in conversation, Miranda snarled under her breath, 'Don't even think about it!' She was shooting dirty looks at Gaga the whole evening."

Later in the evening, says the insider, Miranda's fuming continued backstage when Blake began chatting up Rihanna — whose violent on-again boyfriend, singer Chris Brown, has been a public target of Miranda's crusade against domestic violence.