Fashionista Kelly Osbourne turned heads recently after an impressive 70 pound weight loss, yet the key to her fitness success resorts back to her childhood.

The daughter of rock star Ozzy Osbourne told Self Magazine she shed her unwanted poundage with a workout tool similar to a hula hoop.

"I have a Hoopnotica hula hoop, I use it every day, and it's made my back and arms stronger, and my waist has gone down 2 inches! On Saturday nights my friends and I put on ridiculous outfits and hula-hoop and dance when everyone else is at 'da club,'" she told Self.

"We call it #HipHopAnonymous. Adam Lambert is in it. We live in the same building, and random people show up. The next morning you're like, 'Oh, my God, I'm so sore,' but you had the best night ever."

Advocates of the newest weight loss secret say compared to standard aerobic workouts, hula hooping offers a fun and enjoyable experience while burning upwards of 400 calories in one session.

Founder and CEO of Hoopnotica, Gabriella Redding, attributes her own 55 pound weight loss to hula hooping. In 2011 Forbes ranked the Hoopnotica as one of the products you needed to know for the year.

Redding told the magazine, "I knew the moment I took my first hula hoop class, which was the first in the nation, with the 'Queen' of hula hooping, Hoopalicious, that this was going to be big."

Osbourne is far from the only celebrity to utilize this recent development in exercise. She is joined by First Lady Michelle Obama, Catherine Zeta Jones and even Beyonce's famous curves are accredited to this innovation, ABC News reported.

To learn more about how hula hooping went from a fun activity for kids back in the 1950s to the newest fitness trend sweeping Hollywood visit