What sort of red carpet event could bring Nicole Richie, Rachel Zoe, and Kourtney Kardashian out to the valley? Turns out, it was just a pal's bday bash!

On Thursday evening the ladies, along with Courteney Cox and several other non-famous friends, attended Sara Foster's birthday party at Casa Vega in Studio City. Rach posted a picture from their table and wrote, "I love this gorgeous birthday girl @iamsarafoster #happybirthdaysara #ageless #hotmamma #greatfriends XoRZ." In case you didn't know, Sara is the sometime actress/daughter of music producer David Foster, and her younger sister Erin frequently hangs out with this clique as well.

Kourt looked fantastic (it still blows our minds that she gave birth to her third child just two months ago!) and while we love Nicole's outfit, her faded pink tresses seriously make us want to hurl. What's wrong with a natural hue? She looks totally hot with brown or blonde locks, so we don't understand why she's wrecking her remaining 90 strands of hair with all sorts of chemicals. And those roots?! They're almost as bad as driving the wrong way on the freeway in the middle of the night...

Kristen Stewart and Alicia Cargile landed at Los Angeles International Airport on Thursday evening, and rather than taking yet another romantic vacay, the ladies were attending the wedding of K. Stew's bestie, Riley Keough. If the Twilight starlet is bringing Alicia as her date, things MUST be serious!

Riley got married in Napa, California on Wednesday, and rumor has it she's the main pal who's encouraging K. Stew to come out with her relationship! "Riley knows Kristen would be happier if she stopped hiding her feelings," a source tells In Touch. "She told Kristen she shouldn’t hide who she is and who she loves."

K. Stew was notoriously private when she was with former flame Rob Pattinson, but it looks like we'll be seeing even more of the actress and her girlfriend because the mag also reports that they're moving in together! "Kristen recently bought a huge loft in downtown LA and she asked Alicia to move in," an insider tells the publication. "It seemed pointless to live apart, since they were with each other every day."

Aww, it seems like K. Stew really has moved on from R. Pattz!

A little comfort food during this difficult time isn't a bad thing!

Kris Jenner attended a party at a pal's place in L.A. today, and the momager was spotted exiting with a giant paper plate of grub in her hands. We don't blame her for chowing down! Lately, the Kardashian family is getting more press than they've ever gotten before, but not for the reasons they want…

By now, the whole world has heard that the rumors Kris' ex-husband Bruce Jenner is transitioning into a woman are indeed true, and that can't be easy for the woman he was married to for almost 23 years. Apparently, Kimmy K's mom only found out about her former spouse's plans to switch genders a few weeks ago, and it's hasn't been an easy pill to swallow.

The next question on everyone's mind is whether the former Olympian will be romantically involved with men or women following his gender reassignment surgery. According to reports, the answer is neither… for the time being. "It is quite complicated. A lot of people think that his transformation has to do with the fact that he wants to have sex with men. If that was why he was doing this, then he would just come out as a gay man. Bruce is not gay. He did not have sex with men while he was with Kris, and he does not have sex with men now," an insider dished to Radar.

So will Bruiser still be chasing the ladies when he's a lady himself?

"Bruce is not going through this transition to be a lesbian, either. Bruce obviously has loved to be with women in the past. But sex is the farthest thing from Bruce’s mind right now," the source added.

This will be the first season of Keeping Up with the Kardashians where there's no need to come up with fake story lines to be on the cover of tabloids!

Riley Keough married fiance Ben Smith-Petersen yesterday in Napa, California, and famous friends in attendance included Kristen Stewart, Cara Delevingne, Zoe Kravitz and Dakota Johnson. So that's why we saw K. Stew and girlfriend Alicia Cargile jetting out of LAX the other day!

Keough and Smith-Petersen met while filming Mad Max: Fury Road in 2012, and last August they confirmed their engagement on Facebook. Keough was previously engaged to Alex Pettyfer in March 2012, and this is the first marriage for both.

And speaking of love and K. Stew, rumor has it the actress and her lady friend are taking things to the next level and moving in together! "Kristen recently bought a huge loft in downtown LA and she asked Alicia to move in," an insider tells In Touch. "It seemed pointless to live apart, since they were with each other every day."

And apparently Riley has been the one encouraging her BFF to come out and embrace the relationship. "Riley knows Kristen would be happier if she stopped hiding her feelings," a source tells the mag. "She told Kristen she shouldn’t hide who she is and who she loves."

Just days before her not-to-be missed Grammy performance, Madonna got busy striking a pose at a dance studio in Los Angeles on Wednesday. Given her off-duty ensemble (oversized sweatshirt and plaid pajama pants), we can't imagine the oh-so-glam superstar wanted anyone to see her looking so unglam. She looks like she rolled out of bed and into the dance studio!

We are really looking forward to her Grammy Awards performance this year. The popstar is known for making a splash at music's biggest night. In 1999, the dancing gal got her geisha on when she did an intense performance of "Nothing Really Matters." In 2006, Madonna was a lycra-clad diva when she "Hung Up" on the Grammy audience. In 2014, the outspoken singer presided over 33 gay marriages. We wonder how she will turn up the volume this year?!

In other Madge news, the Material Girl made history today by debuting her new music video, "Living For Love," from her upcoming album, Rebel Heart, on the picture messaging app Snapchat, which has 200 million users and is worth an estimated $10 billion.

According to Billboard, the super popular app has been attempting to create shareable music videos on their Snap Channel. Madonna is the first big name the company has picked up.

The video is directed by French team Julien Choquart and Camille Hirigoyen (aka J.A.C.K.) and choreographed by Megan Lawson. The video is styled by B. Akerlund, who has worked with Beyonce and Britney Spears in the past.

Madonna really is one trail-blazin' lady!

Did he have something on his pants? Or are his buns just that mezmerizing?

Bradley Cooper took a brisk walk through snowy NYC yesterday, and both female and male passersby couldn't help but sneak a peek at the American Sniper star's bum! He did bulk up to play a navy SEAL for his latest role, but who knew it would get him so much attention from random fans on the street?!

His box office smash war flick has received backlash from critics, but the Oscar nominee recently spoke out about the negative comments and how they detract from the greater message of the movie. "The fact that it's inciting a discussion that has nothing to do with vets — and it's more about the Iraq War and what we did not do to indict those who decide to go to the war — every conversation in those terms is moving farther and farther away from what our soldiers go through, and the fact that 22 vets commit suicide each day. The amount of people that come home is so much greater because of medical advancement and ... we need to take care of them" he told Fresh Air.

We wonder if he will take home the big prize for Best Actor at this year's Academy Awards? We know from the above pic he deserves the award for Best Booty!

We're not sure if Taylor Swift is wearing a skirt, shorts or a skort, but any way you look at it, her legs are amazeballs!

On Wednesday afternoon the 25-year-old hottie paid a visit to her mom, and she looked like she was at a fashion shoot. Seriously, why is this girl single?!

Well, we might have spoken too soon. Later in the day T. Swizzle posted the video below and wrote, "Went to the Grammy Museum in LA to see the exhibit they did on ma life. My behavior was as embarrassing as usual." HA!

Went to the Grammy Museum in LA to see the exhibit they did on ma life. My behavior was as embarrassing as usual.

A video posted by Taylor Swift (@taylorswift) on Feb 5, 2015 at 11:26am PST

Rihanna dined at Giorgio Baldi on Wednesday evening, and after spending three hours at her fav eatery, the 26-year-old starlet headed to the studio. While Ri was wearing a pretty casual outfit, she still looked gorgeous, and we love that she was rocking a necklace with "Bridgetown" on it. Way to represent her hometown in Barbados!

In other RiRi news, the R&B superstar appears on the new cover of Harper's Bazaar, and this is probably one of the coolest photos we've seen in a while. Not only does the starlet strike a pose in the jaws of a shark, but she actually went swimming with one!

Rihanna posted a pic on Twitter and wrote, "Then this happened .... #bucketlistsh*t Thank you @harpersbazaarus for such a thrilling shoot!!" Bucket list sh*t indeed!