PINK IS PREGNANT, TAKES ADVICE FROM CHRISTINA ON MOTHERHOOD.

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." People magazine says they may even be touring together. Nice!