During an interview with U.S. Cosmopolitan, Kelly Osbourne reignited the rift between her and Lady Gaga.

She said of Lady Gaga, "She's a great big hypocrite," after receiving death threats from Gaga fans who call themselves "Little Monsters."

The comments came after Osbourne received death threats from Lady Gaga's fans, nicknamed "Little Monsters," after a disagreement between the two celebrities came about earlier this year.

Said Osbourne to U.S. Cosmo:

"I loved Lady Gaga. I totally believed in everything she stood for, until I realized she's a great big hypocrite.

"Don't say, 'When you see bullying, intervene,' while letting your fans send me death threats. If my fans did that, I would not stand for it. You can say whatever you want with your millions of monsters."

Kelly Osbourne went on to say Lady Gaga feeds off her "Little Monsters" enthusiasm and crazed behavior, "'I know the truth. Your bells and whistles mean nothing to me. You're feeding on the freaks and geeks to further your career?"

Osbourne even attacked Lady Gaga over her lack of support for the gay community, even though Gaga has prided herself on her involvement in LGBT issues.

"Do you really care about the gay community? Because if you did, you'd stand up for it more than you do," she said.

Earlier this year, Kelly criticized Lady Gaga for failing to show on the Grammy red carpet, which Osbourne said was disrespecting to her fans.

Then, Kelly Osbourne further exacerbated the row by suggesting on television Lady Gaga was pregnant because of an outfit she wore.

Lady Gaga responded by saying "defend others who are bullied for their image."

Which is where Kelly Osbourne's hypocrite designation for Lady Gaga comes from.

Gaga's "Little Monster" fan base has been attacking Kelly Osbourne so mercilessly after their rift, Kelly's mum, Sharon Osbourne, has had to intervene on her daughter's behalf, imploring Lady Gaga to have her fans calm down back in January.

Kelly Osbourne also reveals some family issues in the Cosmo issue, like her love for father, Ozzy Osbourne, despite his recent admittance he's been using drugs again.