Rapper Lil Wayne has scored his first U.s. number one on the Billboard Hot 100 after toppling Leona Lewis.

Lil Wayne's Lollipop switches places with Lewis' Bleeding Love on the new countdown.

Ailing Jordin Sparks' No Air duet with Chris Brown, Usher's Love in This Club and Mariah Carey's record-breaking 18th number one hit Touch My Body all hold firm at numbers three, four and five respectively.

Carey also scores the new chart's highest debut - Bye Bye enters the Hot 100 at 23. A third Carey hit from her new number one album E=mc2, Migrate, also enters the chart at 92.