The pop divas "bumped into" each other while doing back-to-back interviews on Friday with Ryan Seacrest.
Xtina was about to sign off, but Ryan asked her to say hello to Pink who was on the other line. And Christina jumped on the chance to wish her the best.
"Congratulations! I just heard the amazing news," said Aguilera. "I'm so happy for you. Join the club."
"I feel like I really am joining a club," Pink responded.
"How are you feeling? Do you have morning sickness? How's it feeling for you?" questioned Xtina.
"No, unfortunately," Pink said. "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?"
After they were chatting for a while Aguilera suggested "We have to have play dates." Pink laughed but Xtina realized the hesitation. Then, Pink explained that it was not personal.
"The reason I laughed is I was with these two girls last night who used to be best friends until their kids started fightingIt's pretty funny what that does to people. What if your kid punches my kid? Then what happens?"
"Yeah, really messed up. And the moms start battling it out!" Aguilera added.
Awwww! We can't imagine that happening. Those will be some fierce kiddies!
[Image via WENN.]