Simon Cowell wants to look after singer Leona Lewis and celebrate single Bleeding Love reaching No 1 in the US charts .

To do this the mogul plans to buy a £2.5 million mansion in Beverly Hills for Lewis.

'Simon thinks she is absolutely amazing so he wanted to treat her,' a source tells the Sunday People.

'He's so pleased with how hard she world and what a massive success she's become. Leona's a homely girl and isn't at all flash so Simon got the idea to buy her something practical she would use.'