• Share
  • Tweet
  • Share

A video posted by Mariah Carey (@mariahcarey) on

Who knew Mariah Carey and John Legend belong together on the Las Vegas stage?!

When the "All of Me" singer and wife Chrissy Teigen jetted off to the famous city this weekend, many fans weren't exactly sure what to expect. After all, it was baby Luna's first trip to the area.

But as fans quickly discovered, the Hollywood parents were able to spend part of the trip attending Mariah's residency inside The Colosseum at Caesars Palace.

As James Packer's fiancée belted out her favorite hits, she invited John up on-stage during her performance of "Touch My Body." With a giant bed placed on stage, John quickly jumped in where he was blindfolded.

But before you suspect Chrissy was upset, you have to see the video Mariah shared on social media after the gig.

A video posted by Mariah Carey (@mariahcarey) on

"We love you @chrissyteigen," Mariah wrote on Instagram as Chrissy cheered on the performance while dancing in her seat. John later added, "We go back like babies and pacifiers."

After the show, John and Chrissy were quickly reunited with their baby girl and were able to celebrate Father's Day as a family.

"Happy Father's Day to the most perfect man Luna and I could ever ask for," Chrissy shared in a heartfelt post. "Since the day she was born, you've done every bottle with me, woken up with me to keep me company through every night. You don't mind diapers, get all the best burps, and read her Goodnight Moon like poetry."

She continued, "It makes me so happy to see so much of you in her smile and eyes that completely glow when looking at you. She will never look at anyone - anyone - the way she looks at you."

Mariah's World premieres later this year only on E!

A photo posted by John Legend (@johnlegend) on