Mariah Carey: Happy Birthday, Dem Babies!

Mariah Carey rocks a skin tight jumpsuit at the Top Of The Mountain Concert held at a ski resort on Monday (April 30) in Ischgl, Austria.

The 42-year-old singer, who changed to a long black evening gown halfway through her set, was joined by her hubby Nick Cannon at the special performance.

“Thank you to all the fans who came out to the show! I hope you liked ‘Underneath The Stars’ which I did especially for the lambs.. LYM!” Mariah tweeted.

The concert was a special occasion for Mariah and Nick – it was on the same day as their twins Moroccan and Monroe‘s first birthday! “Singing at this altitude is almost like giving birth to twins, which I did last year on this day.. lol! Happy birthday dembabies!!”

Happy birthday, little ones!

15+ pictures inside of Mariah Carey rocking out in Ichgl, Austria…