Paula Abdul and fellow X Factor judge Nicole Scherzinger hit up The Grove in LA to tape a segment for Extra, and the lovely ladies were happy to greet their fans.

While Nicole kept it simple in a black leather dress, Paula got a bit racy with a gown that had a slit way up her thigh. You go, girl!

Also on hand ... judges Simon Cowell and L.A. Reid. But when you show up with two sexy women, the guys obviously take a backseat. Sorry, Simon.

See all four judges in the gallery below.

X Factor/Fox

The X Factor premiere kicked off last night with Rachel Crow ... a 13-year-old singer who belted out Duffy's hit "Mercy" (click through to watch the clip).

After her powerful performance, judge Paula Abdul said, "You opened up your mouth to sing and blew us away."

Simon Cowell added, "We're going to hear a lot about you."

The teen is hoping to win the show's $5 million prize ... to help her family buy a new house. Crow told the judges, "We live in a two-bedroom house, and I have six people in my family. I'm a girl. I need my own bathroom."

Sassy!

Meanwhile, a slightly less-talented contestant surprised Paula with HIS X Factor, almost exposing himself on stage and causing Ms. Abdul to walk off ...

Simon Cowell had a smokin' hot time at The X Factor premiere with girlfriend Mezghan Hussainy despite rumors that the two had called off their engagement.

X17online caught up with the reality show's main man at the ArcLight Cinerama Dome in Los Angeles Wednesday night, and we asked him if he was still dating the 38-year-old makeup artist.

Simon looked confused, turning around and pointing down the red carpet towards Mezghan.

The question shouldn't have come as a big surprise, as last week Simon told Howard Stern: “I'm not sure [if we're still engaged]. I get embarrassed talking about things." After opening his admittedly big mouth, the 51-year-old said he wanted to keep his relationship private from here on out.

Reports have also surfaced that Mezghan has moved out of Simon's Beverly Hills mansion and into one of his nearby properties. "Yes, she is living here. She is here now," a member of the house staff told the Mirror.

Mezghan also did not wear her engagement ring to the premiere last night, as seen in the pic below. However, the two put on a united front throughout the evening.

Paula Abdul didn't want her picture taken Friday when we spotted her out with her adorable chihuahua, but the pampered pooch sure didn't mind being in the spotlight!

The X Factor judge took her two dogs to a pet clinic ... we hope it was just a standard check-up!

Abdul recently revealed she was nervous on the first day of shooting the upcoming talent show with her former American Idol co-star Simon Cowell. She called her relationship with Cowell "demented" but said being back together with him "feels like home."

X Factor premieres September 21.

Paula Abdul has always been tiny, but the new X Factor judge stepped out in Beverly Hills looking noticeably thinner than her usual self.

Has the stress of shooting the premiere season of X Factor possibly gotten to Abdul? We can't even imagine how stressful the shooting schedule can be.

There's also been major drama surrounding the show since it first kicked off production earlier this year. Now that Britain's Sweetheart, Cheryl Cole, has gotten the boot from her hosting gig in favor of Pussycat Doll Nicole Scherzinger, is the network finally happy with the nearly finished product?

Whatever the case for Paula's recent drop in weight, we hope she's staying healthy -- the ex-Idol judge will need all her energy for the busy fall season ahead!

Check out a sneak peek at the world premiere of X Factor, after the jump ...

Is it any surprise that Simon Cowell is staying in classy digs while in Los Angeles?

An X17 photographer spotted The X Factor creator arriving at The Peninsula Hotel in Beverly Hills, CA, on Sunday - in his signature white v-neck tee, natch.

Also in town? Cheryl Cole, the former Girls Aloud singer who was supposed to be one of the judges on the show ... until she got canned. A source close to the British pop star told The Daily Mail that Simon and Cheryl have "no plans to meet up either now or in the foreseeable future."

"They have both moved on with their lives," the source adds. "She hasn’t spoken to him and they have no plans to see each other in America."

Instead, Simon appears to be focused on his friendship with Paula Abdul, which is useful since she has not been fired as an X Factor judge. Just two days earlier Paula was also spotted in Beverly Hills - she looked fabulous shopping in the posh 'hood in her sky-high heels!

See an exclusive video of Simon at the hotel below, and check out pics of Paula after the jump and in our gallery below!

Apparently, Cheryl Cole only has hard feelings towards Simon Cowell (so the rumors say.) Regardless, the former X Factor judge holds no grudges against Paula Abdul.

Cole sent Abdul, who is still a judge on the show, a bouquet of flowers. Abdul Tweeted a pic of the posies, saying, "At the Wed @TheXFactorUSA I got the sweetest gift from #CherylCole -she sent me this beautiful bouquet of flowers."

According to the Hollywood Reporter, judge LA Reid got a fruit basket. And Cowell got a big box of ... nothing. That's gotta be an awkward green room!

Cole is rumored to have several offers for the other TV shows since parting ways with both the US and UK versions of the show a few weeks ago. Nichole Scherzinger, who was set to be co-host of the show, replaced her as a judge. Shortly after, it was reported that Cole would not return as a judge of the UK X Factor, which she had judged since 2008.

Twitter

Oh, Paula ... good thing you get along with everyone!

The newest X Factor judge, Nicole Scherzinger, posted the above photo of she and Ms. Abdul during production on Fox's reality show. The former Pussycat Doll also wrote, "After finishing my vry 1st day on the new job, every1 has bn amazing! Thanku NJ 4 welcoming me. I'm truly grateful & excited 2 B judging."

Ironically, just a month before, Paula was striking a similar pose with ousted X Factor judge Cheryl Cole. The "Straight Up" singer had posted the smiling photo with Ms. Cole on her Twitter account. What a difference a month makes!

Can we say ... awkward?!