American actress/comedian Kathy Griffin has lashed out at celebrity blogger Perez Hilton for bullying Lady Gaga.

Gaga and Hilton, who were once close friends, locked horns after Hilton allegedly sent the Poker Face singer a photo of her in a wheelchair following her hip accident. The feud heated up after Lady Gaga lashed out at Hilton last month, claiming he was "stalking" her. Adding on, the 35-year-old blogger recently posted nude pictures of the Telephone singer on Twitter, and also linked it to her interview with the Guardian, where she admits a drop in popularity.

The 52-year-old actress took to Twitter to express her feelings about Hilton's "bullying" the singer.

"Is @PerezHilton cyber bullying & trying 2 RUIN @LadyGaga (whos a FIERCE advocate 4 #LGBT rights) BC she doesnt wanna hang out w him anymore?" she tweeted.

She also took to her Facebook and wrote: "Forgive me if I'm a little behind on this one but I've been touring like crazy and out of the country...why is the supposedly "I've stopped bullying" viciously attacking his old pal Lady Gaga on a daily basis? Didn't he try to do the same thing to Kesha? Did any of you see the scene in Ke$ha's MTV reality show where she breaks down in sobs after reading yet another vicious google alert at the hands of Perez Hilton? If Ke$ha doesn't stand up for being "who you are"....! This f**king pisses me off so much...why declare war on Lady Gaga???...who in addition to...possessing an actual skill set, you know...singing, dancing, writing a fierce advocate for the LGBTQIA community on a VERY HIGH level! Why is he using the oldest trick in the book and trying to pit women against each other? Lady Gaga's Applause "vs" Katy Perry's Roar. Who gives a f**k? They are BOTH catchy songs."

Hilton immediately denied the claims and said he was just "stating facts."

"@kathygriffin @ladygaga Not true. I haven't said anything mean or hurtful towards her. No name-calling. Nothing that would be #bullying. xo," he responded, adding,"@kathygriffin @ladygaga P.S. It was me who didn't want to hang out with her. xoxo."

"@tyleroakley @kathygriffin Don't confuse your followers with what real bullying is vs me pointing out her iTunes sales or stating facts," he concluded.