Diplo dealt Taylor Swift a low (but semi-funny) blow last night when he tweeted, "someone should make a kickstarter to get taylor swift a booty," but things quickly escalated when Lorde got involved in the Twitter battle. Coming to her bestie's defense, the New Zealand-born singer tweeted, "Should we do something about your tiny penis while we're at it hm," and a number of fans re-tweeted her message to the DJ. Real mature, guys!

As you may know, Diplo, 36, is currently dating Katy Perry, who famously feuded with Swift earlier this year on social media. And let's not forget that T. Swizzle penned "Bad Blood" about their frenemy status. Back in September Katy tweeted, "Watch out for the Regina George in sheep's clothing," and in an interview with Rolling Stone, Taylor hinted that she had some big beef with Katy.

"For years, I was never sure if we were friends or not," Taylor told the mag. "She would come up to me at awards shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?' She did something so horrible. I was like, 'Oh, we're just straight-up enemies.' And it wasn't even about a guy! It had to do with business. She basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me. And I'm surprisingly non-confrontational you would not believe how much I hate conflict. So now I have to avoid her. It's awkward, and I don't like it." Meow!

But here's what's even more interesting -- Lorde and Diplo are friends (or at least they used to be), so is this whole thing just getting hyped up by the press? Diplo remixed Lorde's track "Tennis Court" for the new Hunger Games soundtrack, and back in April she posted a photo of the two and wrote, "me and bud last week at coachella." But how does she know that he has a wee wang? We don't even WANT to know...

And we're not sure if Katy put Diplo up to this, but there has to be a better way to handle it...

Jennifer Lawrence appeared on Late Show With David Letterman last night, and the 24-year old actress looked absolutely stunning, but she revealed that there's one thing she can't do: sing!

"I do not like singing in front of other people, that's like, my biggest fear," J. Law told Letterman. "I cried on set that day ... That was awful -- I'm scarred from my childhood. I have a Southern mother that used to tell me I was amazing at everything and I could do everything, but I can't. I had this tone-deaf-Amy-Winehouse rahhh voice and I sang in front of the school when I was 8, because I thought I could ... My dad laughed for the entire week! I'd hear him around the house, imitating me. I hate it, I hate it!"

But she can't really be that bad, because producers included a clip of the Oscar winner singing in The Hunger Games: Mockingjay - Part 1, which hits theaters on Friday. Chris Martin's on-again/off again girlfriend says she still hasn't heard her audio though. "I was like, will you guys please get Lorde and lip-sync it?" she joked. She also sang in the first Hunger Games flick, but her voice was barely projected above a whisper, so we couldn't tell just how tone deaf she was...

But really, the absolute best part of the interview is when J. Law and Dave sing a Cookie Monster-esque version of "Holly Jolly Christmas" -- check out the video above!

After taping her appearance, however, thing got a bit chaotic outside of the studio when a number of fans actually pushed over a metal barrier when the actress was signing autographs. Luckily security whisked J. Law away and it doesn't appear as though anyone got hurt, but dayum! It sounded like a scene straight outta Panem...

It's official! Miley Cyrus and Patrick Schwarzenegger ARE dating -- and the marijuana-loving singer got to meet her boyfriend's mom, Maria Shriver last night!

After attending a Q&A for the film Still Alice, staring Kristen Stewart and Julianne Moore -- produced by Patrick's mom Maria -- the pair returned to Shriver's Brentwood home to celebrate.

Miley wore a cream-colored coat with matching crop top underneath and black leggings and carried a Chanel bag -- a bit more demure than her usual high-cut leotards and barely-there denim cut-offs.

The pair were whisked away in a chauffeur-driven car after the screening and the two 21 year-olds headed back to mom's.

Patrick first spoke about his crush on Miley in a 2011 interview with Details magazine, in which he said: "My eye is set on Miley."

The two were spotted just two weeks ago, coming out of what appeared to be Schwarzenegger's east LA apartment, close to USC where he attends school. Since then, the couple have kept a low profile and haven't seemed excited about going public with their relationship ... until now.

The screen of Shriver's film Still Alice was the pair's first public appearance together, seemingly cementing their relationship and officially "announcing" their boyfriend-girlfriend status.

Another day, another nude photo of Kim Kardashian!

Of course if a photographer has Kim in a studio, completely naked, he's not just gonna take pix of her backside ... he's going to get the front too! Famed French photog Jean-Paul Goude, shooting for Paper magazine, had just such an opportunity during Fashion Week in September and he went for the full kit and caboodle!

Kanye responded to his wife's rear shot earlier today but Instagraming the photo with the hastag: #allday. Gross. Seriously? You want your wife to show her stuff to the whole world and SHARE that with everyone? There's some seriously messed up psychology going on there ...

And now, today -- an even crazier revelation? Kim's nips aren't quite the pepperonis we thought they were ... but she still looks wack. Thoughts?

JLaw is a red-hot lady!

Jennifer Lawrence strutted her stuff while entering The Late Show with David Letterman in New York City. For her appearance on the late-night show, the 24-year-old donned a bodycon dress and some kicky heels which she paired with a mid-length black jacket and shades. OMG we are so excited for The Hunger Games: Mockingjay - Part 1!

Lawrence was in the Big Apple promoting the hotly anticipated film but earlier this week, the blonde was at the London premiere of Mockingjay, just missing her boyfriend Chris Martin, whom she's reportedly giving a second chance.

With her international promo Hunger Games tour currently in full effect, fans may be seeing pics of the stunner all over the Internet, but don't expect to see Hollywood's hottest "It" girl joining social media anytime soon. During an interview with Nick Grimshaw on BBC 1, the Oscar winner admitted she has an aversion to social media, "I'm not very good on phone or technology. I cannot really keep up with emails so the idea of Twitter is so unthinkable to me."

Well if we had had nude photos of us leaked all over the Internet -- we'd be hesitant to join any social media too. Lawrence went on, “I don’t really understand what it is. It’s like this weird enigma that people talk about. It’s fine, I respect that, but no, I’ll never get a Twitter."

Twitter or no Twitter -- we love her anyway!

What a fun girl's day out!

Taylor Swift and Karlie Kloss had a busy afternoon in New York City today, first hitting up ABC Carpet and then shopping at Sephora for beauty products, and the ladies looked mighty fine on their outing! The singer showed off her unbelievable legs in a short dress, tan coat, and polka dot tights, while the model took a more casual approach to her attire in sneakers and a plaid button down.

T-Swizzle must be giddy over her success lately! Her album 1989 is #1 on the Billboard charts for the second week in a row, selling over 1.68 million copies since its release. One person who isn't loving Tay Tay? The CEO of Spotify! The songstress pulled all her music except for one song off the streaming music service after criticizing them for inadequate compensation for artists, but the company just issued a statement to defend their practices. "We started Spotify because we love music and piracy was killing it. When I hear stories about artists and songwriters who say they’ve seen little or no money from streaming and are naturally angry and frustrated, I’m really frustrated too. We will do anything we can to work with the industry to increase transparency, improve speed of payments, and give artists the opportunity to promote themselves and connect with fans," CEO Daniel Ek wrote on their official blog.

We know she said she's enjoying being single, but the only thing that could make her life any sweeter these days is a new romance!

Marvel has just released an extended trailer for the Avengers sequel, Avengers: Age of Ultron. And man, is it action packed!

The two-and-a-half minute clip shows a new foe, Ultron, an intelligent robot with the voice of James Spader, who will stop at nothing in an attempt to destroy mankind. poses a major threat to the future of mankind. It's up to the Avengers to squash his path of destruction!

"I'm gonna show you something beautiful," Ultron says. "Everyone screaming for mercy. You want to protect the world, but you don't want it to change."

Iron Man (Robert Downey Jr.), Thor (Chris Hemsworth), Captain America (Chris Evans), The Hulk (Mark Ruffalo), Hawkeye (Jeremy Renner), and Black Widow (Scarlett Johansson) must band together again to save the world!

There's a lot of puppet/no strings/Pinocchio references we aren't really feeling -- but other than that -- the flick looks like a rockin' good time!

Avengers: Age of Ultron slams into theaters on May 12, 2015.

Even when delivering an insult, her voice makes her sound so sweet!

Melanie Griffith left the Rossano Ferretti Hairspa in Beverly Hills yesterday and was asked by a videographer if she has seen daughter Dakota Johnson's upcoming movie 50 Shades of Grey, but he accidentally called it 30 Shades of Grey, and that prompted the actress to give a witty response!

"Why don't you get the name right, first of all," she quipped as she made her way to her car, which happened to have a parking ticket on the windshield.

We're not sure how many moms would want to watch their daughter act out bondage sex scenes on the big screen, but Mel takes it all in stride!