After dinner at Giorgio Baldi in Santa Monica, Rihanna stopped by the London Hotel in West Hollywood to change her clothes, and shortly after that she arrived at Greystone Manor to get her party on. While that seems like a normal night out for the R&B superstar, it could have gotten a bit ugly, as Chris Brown and girlfriend Karrueche Tran were at Greystone too!

The club is enormous, so the odds of the former lovers crossing paths were pretty slim, but still! This is the second time in less than two weeks that Rihanna has ventured into dangerous territory when it comes to her ex-boyfriend, and she got even closer this time! Given the typical size of Karrueche's entourage, we're not sure who would win a club brawl if the ladies had a run-in and started ripping each other's weaves out!

Look, it's Mrs. Jim Toth!

Drew Barrymore tied the knot with art dealer Will Kopelman over the weekend, and the posh ceremony brought out a slew of Hollywood A-listers! A pregnant Reese Witherspoon attended with her husband, and looked lovely in a pink dress with a cream blazer.

Also in attendance: Actress Lake Bell and funny man Jimmy Fallon, whose wife Nancy Juvonen is Drew's producing partner at Flower Films. We caught the late night host horsing around with a young guest, and he looks like he's a natural with kids!

The new Mrs. Kopelman's godfather Steven Speilberg was on hand for the special day, and since the bride's biological father is deceased, we wonder if the Oscar winning director stepped in to walk her down the aisle?

For more details and pictures of the romantic Montecito nuptials, click here.

Starlets like Paris Hilton, Lindsay Lohan and Emma Roberts partied it up in the Hollywood Hills to celebrate promoter pal Allison Melnick's birthday on Friday, and Princess P gave her bestie quite the toast -- click the video above to see what all the heiress had to say!

Paris is currently in NYC, and after that she'll be heading to Las Vegas for the Electric Daisy Carnival this weekend. She's quite the party hopper!

Ashley Tisdale may not be an artist, but she knows what she looks like: hot!

The High School Musical star appeared looking naturally beautiful as always, wearing some strappy heels and a flowing black dress that showed off her legs as she was seen at an art show in West Hollywood over the weekend.

The 26-year-old actress has been enjoying her downtime recently, having already shot her upcoming film Spring Breakers. She also enjoyed some pampering at the Nine Zero One Salon in Los Angeles for the first day of the Colgate Optic White Beauty Bar on Friday. Wonder what other fun activities the Phineas and Ferb star has in store?

Lindsay Lohan went shopping in Beverly Hills over the weekend, and we got a peek at several bruises on the 25-year-old starlet's toned legs. While we're not the biggest fans of her newly dyed brunette locks, we know she'll be going back to her gorgeous red mane when she's done shooting Liz and Dick, so we're definitely looking forward to that!

But back to the bruises ... think Lilo's just a huge klutz, or is she getting frisky with someone who's into extracurricular activities that belong in the pages of Fifty Shades of Grey?

The proof is in the pudding ice cream!

We caught Tyra Banks indulging in a sweet treat while strolling through Malibu on Sunday, and we have to commend the catwalker for loving her body just the way it is!

A lot of models succumb to pressure to be a size 0, but Miss Banks has always maintained that you don't have to be super skinny to be beautiful, and we couldn't agree more!

Vogue magazine recently vowed not to work with models under the age of 16 or who appear to have an eating disorder, and the America's Next Top Model host was quick to respond to the major announcement.

"If I was just starting to model at age 17 in 2012, I could not have had the career that I did. I would've been considered too heavy. In my time, the average model's size was a four or six. Today you are expected to be a size zero. When I started out, I didn't know such a size even existed," she wrote in an open letter to aspiring models around the world.

Saving the globe one beautiful face at a time, you go girl!

Only Rihanna could wear a sweatshirt/poncho/dress like this with leopard sneakers and a trashy neon pink trucker hat and still look attractive! And get this -- RiRi's $200 Adidas kicks even have a tail on them! Talk about a walk on the wild side...

After returning from New York City on Saturday, the 24-year-old R&B starlet went to grab a bite at Giorgio Baldi in Santa Monica, which she seems to frequent at least three times a week when she's in town.

In other news, Rihanna has released a new video for "Princess of China," and it's much better than the first one! RiRi tweeted the video link at Coldplay and wrote, "I loooove this sh*t! Thanks for the opportunity." Check it out below!

SJP must have a much larger place than Carrie Bradshaw!

Sarah Jessica Parker premiered a national TV ad for President Obama's reelection campaign during last night's MTV Movie Awards, and the Sex in the City star announced she will be hosting a fundraising dinner for the Commander-In-Chief at her Manhattan home!

"The guy who ended the war in Iraq, the guy who says you should be able to marry whoever you want, the guy who created 4 million new jobs. That guy -- President Obama -- and his wife Michelle are coming to my house for dinner on June 14," the actress said in the video.

Viewers were urged to go online and register at JoinObama.com for a chance to win a pair of tickets to the big event, which will undoubtedly bring out some of Hollywood's biggest names.

"It will be a fantastic evening and you can join us. We're saving the two best seats in the house for you... Sarah Jessica and I both have our own reasons for supporting President Obama and we want to hear yours, so please join us," Vogue editor-in-chief and co-host Anna Wintour adds.

Rubbing elbows with the Prez and the fashion industry's most powerful ladies... sign us up!