Leona Lewi is who ?

I think you mean Leona Lewis, right?

Leona Louise Lewis is a British Pop/R&B artist who was born 3 April 1985 in London. She was the first female winner of the UK reality TV series The X Factor. As a result of the show she signed a £1million recording contract to Simon Cowell's record label, Syco Music and later went on to sign a £5 million ($9.7 million) five album contract in the United States with Clive Davis's record label, J Records.[1] Her debut UK single was a version of Kelly Clarkson’s "A Moment Like This" which went on to become the fastest selling UK single after it was downloaded over 50,000 times within thirty minutes of its release. [2]

"Bleeding Love" was chosen to be the second UK single (first elsewhere) and subsequently became the biggest-selling single of 2007 in the UK whilst achieving similar success in 2008 worldwide. At its peak the single reached over thirty number 1 positions in charts around the world including the United States, Canada, Australia, Japan, New Zealand, Mexico, the Republic of Ireland, France, Italy, Germany and Russia. The single is the biggest selling single of the twenty-first century by a female artist.

The debut album Spirit, was released throughout Europe and went on to became the fastest-selling debut album and the biggest seller of 2007.[3][4] A revised edition of the “Spirit” was released in North America in 2008, making its debut at number one on the United States' Billboard 200 album chart. Lewis is the first British solo artist to top the chart with a debut album.[5] To date the album has sold over 6 million copies worldwide and has a 9x platinum certification in the UK.

In November 2008 Lewis set a brand new record for the fastest selling download-only release with her cover of the Snow Patrol song "Run" which sold 69,244 in just two days.[