Mariah Carey's son wants to be a scientist.

Mariah Carey

Mariah Carey

The 'Hero' singer has five-year-old twins Moroccan and Monroe with ex-husband Nick Cannon and the youngsters are already carving out very different personalities.

She said: "They're their own people, they have their own very distinct personalities.

"They're stars to me, but if they want to do something else, Rocky loves making potions and being a scientist and stuff like that and Miss Monroe is pretty much, she likes to be onstage, but she's still shy."

Though she and Nick are no longer together, the former couple reunited earlier this month for a "cute" Mother's Day celebration.

She told 'Extra': "We had a nice little Mother's Day gathering. It was cute."

The 46-year-old singer - who got engaged to billionaire James Packer in January - recently completed a European tour, and though she had a great time on the road, it was exhausting.

She said: "I'm eternally jet-lagged... It was great, it was fun, amazing fans."

Mariah was on tour in France when she heard about Prince's death, and though she called for a moment of silence from her Paris audience and dedicated her rendition of 'One Sweet Day' to him, she initially didn't know how to react.

She said: "I found out before I was going onstage, so it was like, 'Gasp, how do I handle this?' You know he never liked people doing his songs and I didn't know that before I remade 'The Beautiful Ones' years ago and then he was like, 'I like 'Honey'... and I was like, 'I get it, don't remake your songs.'"