Christina Aguilera Invites Pink On Play Dates

Now that Pink has announced her pregnancy, she and Christina Aguilera have a lot more in common than just being a couple of world-famous singers.

The two divas "bumped into" each other on the air Friday when they were scheduled to do back-to-back interviews with Ryan Seacrest on his KIIS-FM radio show.

With Aguilera about to sign off, Seacrest asked her to say hello to Pink on the other line, who noted Aguilera – mom to a 2-year-old boy, Max – could probably offer her some "mommy advice."

"Congratulations! I just heard the amazing news," Aguilera replied. "I'm so happy for you. Join the club."

"I feel like I really am joining a club," Pink said.

Aguilera, 29, then proceeded to interview her fellow singer – whose doctors believe is expecting a girl – about her pregnancy. "How are you feeling? Do you have morning sickness? How's it feeling for you?"

"No, unfortunately," Pink said as Seacrest stayed mum in the background. "I feel like if I had morning sickness I would have lost some weight. But I've kept everything down."

"It's good," Aguilera insisted. "You're eating for two now – use it while you can, right?"

Aguilera later suggested that they get their kids together down the line, saying "We have to have play dates." Pink chuckled at the suggestion, and Aguilera picked up on her hesitation – but Pink, 31, explained it wasn't personal.

"The reason I laughed is I was with these two girls last night who used to be best friends until their kids started fighting," Pink said. "It's pretty funny what that does to people."

Aguilera agreed friends can cross boundaries, saying, "Don't discipline my kid, thanks."

Added Pink, "What if your kid punches my kid? Then what happens?"

"Yeah, really messed up. And the moms start battling it out!" Aguilera said. 

Credit: People

Whitney Port: 'The City' Has Been Cancelled

Whitney Port and pals won't be living life in the big city anymore! The Hills alumna confirmed that MTV has axed her spinoff show The City.

"As of right now it doesn't really look like we're doing it anymore," the 25 year-old Whitney Eve fashion designer said on Ryan Seacrest's KIIS-FM radio show Monday. When asked if the reality series could move from MTV to another network, Whitney said, "No, at this point it's not."

But Whitney, ever the optimist, is handling the cancellation well. "I'm working on some other things," she said. "It's okay, one door closes and another opens."

Credit: Star Magazine

Lauren Conrad Officially Returns to Reality TV

Lauren Conrad hasn't forgotten her roots.

The former Hills star has become a best-selling author, clothing designer and much buzzed-about fashionista, but she now is returning to the career that made her famous – reality TV star.

Conrad, 24, spoke about starring in a new MTV reality show about her life as a clothing designer on KIIS FM's On Air With Ryan Seacrest Friday (see clip below). When Seacrest asked if the rumors of her return were true, Conrad coyly said, "It'd be safe to say [yes] . . . It would follow my career, set in L.A."

MTV later confirmed the news to PEOPLE.

Stating she has "no regrets" from her time on The Hills, Conrad's catfights with cast members and drama filled departure has taught her not to mix business with pleasure. "I've always been open to doing reality again. It's just under certain circumstances," she said. "As long as you have a separation then it works. You have your personal life and work life and when it's combined it's difficult." When asked if long time boyfriend, Kyle Howard, 32, would be part of the series Conrad replied, "Kyle would not be in it."

Conrad, who is busy promoting her new book, Sugar and Spice: An L.A. Candy Novel, and clothing line at Kohl's, will jump back into filming in October. Of the series, Conrad promises, "Details will be announced next week and it will be something very, very different." 

Credit: People

Kim Kardashian: Mason Is the Best Birth Control

Kim Kardashian isn't rushing to have her own baby like big sis Kourtney.

"Let's just say Mason is the best birth control ever!" the E! reality star, 29, joked on Ryan Seacrest's KIIS-FM radio show Thursday morning. "I'm definitely happy to wait awhile."

(She's changed her tune from this Sunday's episode of Kourtney & Khloe Take Miami, where, according to a clip played on the radio show, she says, "I seriously thought by the time I was 30, I would have one [baby] and a bun in the oven... Mason is the cutest baby in the entire world! I cannot wait to have a baby just like him.")

Kim, her new beau, Dallas Cowboys' Miles Austin, her sisters and Mason just returned from a vacation to Cabo San Lucas, Mexico.

"Mason came. It was fun. He loves the beach and the ocean," said Kim.

She had less to say about Austin, 26.

"I am having a really good time. I am living my life... and nothing I want to tell you!" she said coyly. "I'm single and I'm having a good time. You're making it really awkward, Ryan! I'm having a good time, meeting some really great people and trying to live my life... probably a lot more private than I was before!"

Us Weekly has reported the two -- who hooked up in June, about two months after she split from Reggie Bush -- are taking it slow.

"They are dating," said a source close to her, "but she doesn't want to rush anything."

Credit: Us Magazine

'The Hills' Cast 'On Air With Ryan Seacrest'

To celebrate the "The Hills" 100th episode, Kristin Cavallari, Brody Jenner, Stephanie Pratt and creator Adam Divello joined Ryan's radio show to talk about the past, present and finale of the show.

Credit: Ryan Seacrest on You Tube

Adam Divello Talks 'The Hills' Finale, Aftershow

The Hills creator Adam DiVello appeared on On Air With Ryan Seacrest to tout the MTV hit's 100th episode, airing Tuesday -- plus the series finale slated for July 13.

"Everybody's kind of coming at peace with their stories that we've been following along," DiVello said of the finale. "A few of them definitely found happiness and what they were looking for."

And DiVello announced that the live finale aftershow will feature two old Hills friends: Lauren Conrad and Whitney Port.

"It will be a big party," DiVello said. 

Credit: Us Magazine

Kristin Cavallari Talks About BF, Miguel Medina

Kristin Cavallari has a new man in her life, and he's not a Hollywood star.

During a Tuesday radio appearance on On Air with Ryan Seacrest, Cavallari confirmed that she's dating Miguel Medina -- a cameraman from The Hills.

"That's not part of the show," Cavallari, 23, said when asked about Medina. "Yeah, I'm dating [Miguel] and that all I'm going to say about that."

Hooking up came naturally, she explained. "Well, you're together all the time, and it just sorta happens."

The reality star's previous loves include Laguna Beach's Stephen Colletti, Arizona Cardinals quarterback Matt Leinart, The Hills' Brody Jenner -- and she flirted with Justin "Bobby" Brescia, Audrina Patridge's on-and-off beau on The Hills.

Credit: Us Magazine

Whitney Port: 'The Hills Cast Is 'Self-Imploding''

Former cast member Whitney Port says she doesn’t know what’s with The Hills now days; “I feel like they’re all self-imploding or something,” RadarOnline.com has learned.

The 25-year-old says “I’m just in shock,” about all the drama on this season’s The Hills. The center of the controversy is Heidi Montag’s husband Spencer Pratt, who explodes in rage almost every episode in their final season.

While Whitney wouldn’t name names, she said “I don’t know how it go so out of control,” on KIIS-FM with Ryan Seacrest Friday morning.

"I think they're just going crazy. I don't want to say so much because I feel like they're going to attack me,” she says.

Credit: Radar Online

Heidi Montag: On Air With Ryan Seacrest

Ryan Seacrest Almost Played Heidi's Husband

Jennifer Aniston made an appearance on Ryan Seacrest’s radio show “On Air With Ryan Seacrest” on Friday, and during the phone chat, the two found out that the DJ nearly played Heidi Montag’s husband in Adam Sandler’s 2011-due comedy, “Just Go With It.”

“I was supposed to be in that,” Ryan told Jennifer of the Adam Sandler project which she is currently filming.

“That was me. I was gonna be [the character] Adon,” Ryan recounted. “Sandler calls, he’s like, ‘Dude! You gotta play this role… So I was psyched.”

Jennifer then revealed who Ryan’s on-screen partner would have been.

“You would have been Heidi Montag’s husband,” Jennifer said. “What a missed opportunity!”

Credit: Access Hollywood