Lopez Named World's Most Powerful Celebrity

American Idol judge, singer and actress Jennifer Lopez has been named the most powerful celebrity in the world by Forbes magazine.

Lopez took the number one spot in the Celebrity 100 list, toppling Lady Gaga who has fallen into fifth place.

J.Lo is not just a performer - she is also a successful businesswoman with her own perfume and fashion line. She has also endorsed products for cosmetics giant L'Oreal.

By comparison, Lady Gaga, who first hit the international stage with her single Poker Face, is a relative newcomer.

Media mogul and TV presenter Oprah Winfrey remained in second place, while teenage singer Justin Bieber held on to third place.

He debuted at number three last year thanks to his concerts, music sales and the 3D documentary film Never Say Never.

Britain's own Adele has joined the ranks of the world's most powerful celebrities, making her debut on the list.

The Grammy-winning British star has reinforced her position as one of the music industry's biggest stars by entering at number 24.

Adele , who is also 24 years old, was forced to cancel most of her US tour last year due to issues with her vocal cords.

But her album 21 has enjoyed continued strong sales around the world, helping her earn an estimated £21.9m in the past year.

X Factor creator Simon Cowell has fallen to being the 18th most powerful celebrity, after coming in at ninth last year.

Other notable newcomers include Rihanna in fourth place, reality TV star Kim Kardashian at number seven and her sister Khloe at number 73.

Ashton Kutcher , who replaced Charlie Sheen on hit TV show Two And A Half Men, made his debut at number 51. Sheen has dropped off the list.

Forbes awarded the celebs their ranking based on their aggregate scores in the Pay, Money Rank, TV/Radio Rank, Press Rank, Web Rank and Social Rank categories.