Nothing like an Internet fight between two washed up rockers over a washed up pop princess!

Chad Kroeger is currently in Russia with his band Nickelback, where they put on a concert and held a press conference yesterday, but that doesn't mean he stays out of the drama back in the States!

The Canadian rocker and his fiance Avril Lavigne were mocked this past weekend by the "Complicated" singer's ex-husband Deryck Whibley, who decided to dress up as the engaged pair with his girlfriend Ari Cooper, and apparently Mr. Kroeger didn't find their costumes too amusing!

Avril's man fired back at the Sum 41 front man on Twitter, writing, "Hey Deryck loved the costumes! we were going to dress up as you guys this year but all the parties had celebrity themes haha! -CK."

Well, hey, at least this feud makes all the people involved slightly relevant again!

Chris Brown and Karrueche Tran are still friends despite their breakup. What a crazy situation!

The R&B singer left a Halloween party at Greystone Manor in LA rockin' some hardcore face paint ... and of course, making silly faces.

Moments after Brown left in his Lamborghini, Ms. Tran came out wearing an Asian-inspired outfit. She was busy covering her face and chatting on the phone.

Hmmm ... so is Rihanna fine with these two hangin' out or are all three parties involved cool with this scenario? Talk about cray!

Nothing like a little last minute Halloween shopping!

On Sunday Angelina Jolie took Shiloh, Knox and Vivienne costume shopping at a party store in Sherman Oaks, and we were able to get a peek into one of their bags, and someone is going to dress as a gothic count this year. Perhaps Knox?

It looks like the Oscar winner also bought her youngest children some extra goodies -- Viv got a pair unicorn overalls, and her twin brother scored a large yellow crocodile.

P.S. We can't believe how big Shiloh is getting!

Paris Hilton and boyfriend River Viiperi posed for photos before heading to the Playboy Halloween party last night, and once she got inside she tweeted, "#YES! @Iamdiddy killing it on the mike performing all his hits! #CirocFlowingAtThePlayboyMansion! #BestHalloweenEver! :D."

In addition to P. Diddy, stars like Chris Brown and David Hasselhoff were also at the bash ... click the gallery below for more photos!

Er, Ben Affleck has his hands full! How did Jennifer Garner manage to leave her hubby with all three of their adorable kids?

Over the weekend Ben and Jen ran errands in Santa Monica with their little ones, and later in the day they switched off on parenting duties and went to dinner in Pacific Palisades.

It was recently announced that Ben will be honored at the Artios Awards for outstanding film, TV, and theater casting, which will be held on October 29th. The 40-year-old actor will receive the Career Achievement Award, an award previously won by Quentin Tarantino, and CSA President Pam Dixon said in a statement, "Ben is one of the first all encompassing filmmakers we have honored. [He] is a consummate actor, director, writer and producer." And a dad! Let's not forget that one...

Seal was on soccer dad duty Saturday morning, and the 49-year-old singer couldn't have been happier about it!

In addition to cheering on Henry, Lou, Johan and Leni, he also bought them some sweet treats from an ice cream truck. Hmm, wonder if mom Heidi Klum spoils their kids with sugar? And speaking of that, we have to wonder if Seal, Heidi and her bodyguard/beau Martin Kristen are ever going to show up at the same game ... it's not like her current and former flames haven't met before!

Mischa Barton and her new boyfriend, British actor Sebastian Knapp, went to dinner at the Alberta Passage Dinner Club in Vienna, Austria the other night, and it looks like the 26-year-old starlet has finally found a good guy!

The couple have been dating for nearly four months, and not only does she seem super happy with him, but she's starring in the Irish stage production of Steel Magnolias, her clothing line is doing really well and she seems to be staying away from the party scene.

If only we could get her back on the small screen! Every time we see her we have serious Marissa Cooper withdrawals...

We appreciate Kim Kardashian and boyfriend Kanye West's collaborative effort (she's a mermaid, he's a sailor), but that blonde wig just isn't her best look! Love the cleavage though...

For the second year in a row, Kim hosted the Midori Green Halloween party in New York on Saturday night, and Kanye didn't put nearly as much effort into his costume, but we're guessing these two have four more nights worth of outfits planned!

Earlier in the day we spotted Kim jetting in from Miami and arriving at Kanye's pad, and she was already pretty glammed up: