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 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

Kristin Jokes About Becoming a Lesbian

"On the car ride over here I was talking to my girlfriend and said, 'Let's just become lesbians!'" the "Hills" star quipped to "Extra" at the Jingle Ball in Los Angeles Saturday. "Screw all these guys!"

"Obviously I'm joking..." Cavallari went on.

When asked if she'll have a new man by New Year's, the actress -- who doesn't have plans for the holiday yet -- says, "I don't know. We'll see!"

Cavallari has said she doesn't want a boyfriend, and even recently rejected John Mayer's advances.

"I didn't want to be another notch on his belt," she told Ryan Seacrest on KIIS-FM in September.

Credit: Extra

Kristin Talks John Mayer Rumor, Audrina Salary

Changing her story, Kristin Cavallari has gone from only meeting John Mayer “for five minutes” to having spurned his romantic advances.

The Hills hottie told Ryan Seacrest, “I just feel like I don’t need to be another notch on his belt,” during an interview on his KIIS FM radio show.

She continued, “I think he’s a really nice guy,” and when Seacrest informed her that Mayer is said to be “amazing in the bedroom,” Kristen reconsidered, “I’ve heard that. Maybe I should give him a phone call!”

Another topic of conversation was the rumor that Audrina Patridge makes more money ($100,000 per episode) than Cavallari ($90,000 per episode), something Kristin says is inaccurate. “Well, I can tell you that’s not true ... that she makes more money.”

Credit: Celebrity Gossip

To listen to Kristin's interview - which Brody Jenner is also a part of - with Ryan Seacrest, click here.