Courtesy: PETA

Justin Gaston, Miley Cyrus' ex-BF, is joining his If I Can Dream castmates for the latest anti-fur campain ... If You Need Fur To Keep Warm, You've Got Problems.

Gaston, along with Giglianne Braga and Ben Elliott, looking fit and fabulous, joined the cause after watching a graphic video showing animals being skinned alive for their fur.

Braga tells PETA, "I don't understand how people can do that, really. Just torture and kill like that for the sake of fashion."

"This is definitely the … raciest thing I've ever done, but it was for a good cause," adds Gaston.

After speaking out on Howard Stern and then apologizing for chatting about things that were a bit too private (like how he hasn't slept with wife Courtney in four months and how he bedded hottie Jasmine Waltz), David Arquette seems to be keeping a lower profile.

We spotted the actor rocking an ill-fitting suit, red socks and a worn down pair of shoes in West Hollywood this morning, and we're not sure why he was cruising Robertson so early in the day, but at least he's not spilling the deets on his split from his wife of 11 years. But will these two be headed for divorce like Christina Aguilera and Jordan Bratman? Or will they work it out?

Last night South Park decided to target the cast of Jersey Shore, but Snooki definitely got the worst treatment of the group! The petite fist pumper was portrayed as a chunky gremlin who crashes through windows and dry humps unsuspecting men, and while we're sure Snooks is used to the teasing, this is pretty harsh, don't ya think?

Courtesy: Roc–A–Fella Records

Willow Smith is getting crazy with paint in the video for her first single Whip My Hair ... which is set to debut next Monday on BET.

The 9-year-old tweeted, “Sometimes when I think about my life I am so thankful for how blessed I am. Let’s all keep praying for their families!”

Will and Jada Pinkett Smith's daughter filmed the video in Sylmar, California with Ray Kay directing. Kay has worked with Lady Gaga, Justin Bieber and Beyonce on their videos, too.

No doubt, this is going to be fierce!

Bill O'Reilly appeared on The View this morning, and when the conservative pundit blamed 9/11 on Muslims, tempers escalated ... with Joy Behar and Whoopi Goldberg walking off the set.

The drama started after O'Reilly said, "The mosque down here on 9/11. That's inappropriate."

Before storming off, Goldberg responded, "You're saying that Americans are not smart enough to recognize that while it is part of our Constitution to say freedom of religion and freedom to worship and there were 70 families who are Muslim who also died in that building. So you're saying that his saying that they have the right to do it and not saying anymore is why his approval ratings have gone down?"

O'Reilly then added, "Muslims killed us on 9/11."

Barbara Walters immediately criticized her colleagues for walking off, insinuating that it was unprofessional.

Super sexy True Blood werewolf Joe Manganiello is engaged to his equally hot girlfriend of a year and a half, Audra Marie, his rep has confirmed to X17online.

The actor popped the question while the two were on a romantic vacation in Italy earlier this month, and no wedding date has yet been set, but this good news definitely helps offset all the recent breakup drama in Hollywood!

Rihanna does pretty much whatever she wants, and it's not like it's against the law to go bra-less, so why not? We snapped the R&B princess out and about in Hollywood last night, and she flashed us her flaming red hair and a slice of boobie as she took off for the night.

In other Rihanna news, it's being reported that she will duet with Lady Gaga on her new album, Loud, this according to a scan of the back cover of the CD. We're not sure if it's official (reps for the singers won't confirm it), but the song is reportedly called "Broken Heels". I guess we won't know for sure until Rihanna's new disc hits the stores on November 12, but if they did a music video together for a collaboration, that would be our dream come true!

UPDATE:
Rihanna’s rep has denied the reports that Lady Gaga will be featured on the album. BOO!

Looks like there's no chance for Christina Aguilera and Jordan Bratman to work out their marriage issues ... now that X-Tina has officially filed for divorce.

According to the docs, that claim the couple separated on September 11th, Aguilera cited "irreconcilable differences" for the split.

There's also record of a prenup. Whew!! In the petition, Christina wants joint physical and legal custody of their 2-year-old son Max ... and doesn't want Bratman to collect child support down the road.

On Tuesday, our X17 photographers caught the couple spending the morning and early afternoon together, but Jordan left their home around 6pm to meet with his lawyer. Guess we now know why.

We'll see if they decide to play nice.