Celebrating her own success, Mariah Carey made her way to a big CD release party in downtown New York City on Tuesday evening (April 22).

Dressed in a sexy black outfit with diamond encrusted hoop earrings, the Grammy-winning singer was running a bit late for her late night affair - but still made an effort to pose for photographs along the way.

And Mimi had good reason to be in high spirits, as she scored her sixth No. 1 album on the U.S. pop chart Wednesday, sending her straight into the record books.

According to Reuters, “E=MC2 sold 462,971 copies during the week ended April 20, the best debut sales week of her career and the strongest week by any artist so far this year.”

As a result, the 38-year-old diva “is now tied with Madonna and Janet Jackson for the second most No. 1 albums among female artists. Barbra Streisand, with eight, leads the pack.”

Mariah Carey has lost so much weight she can fit into her high school jeans.

The ‘Touch My Body’ singer - who has stunned fans after losing a reported 30 lbs - couldn’t be happier now she is the same weight as when she was 16.

She said: “My jean size went down to my 10th grade size. I got tired of people telling me, ‘You need to lose weight.’ That’s what inspired me.

“For me, it’s not about a number on a scale. It’s not about necessarily even a size. It’s about feeling good and being comfortable in your own skin. Right now, I feel really great. I feel better than I’ve ever felt.”

Mariah also revealed she found it most difficult to give up her favourite meal, macaroni and cheese.

She added to US TV talk show host Oprah Winfrey: “It broke my heart. That’s the thing that I have difficulty letting go of because that’s comfort food. So basically I’m uncomfortable.”