Julia Roberts has the ‘Most genuine smile’

Hollywood actress Julia Roberts has the ‘Most genuine smile’, according to a new poll, which involved 3,000 people and was commissioned by the online bank Smile.

Victoria Beckham was voted for having the 'worst fake smile'. The stunner held off her fellow Ocean's 11 co-star George Clooney, who came third.

X Factor judge Simon Cowell came second. The other best smiles were that of TV character Ugly Betty played by America Ferrera as well as the mysterious smile of Leonardo da Vinci's Mona Lisa.

Beckham piped the United States president, George Bush, to the top spot of having the 'Worst fake smile'. Pop star Britney Spears was recorded as having the third-worst forced smile.

Former Prime Minister Tony Blair managed to creep into the top five worst fake smiles, coming fourth ahead of Motown superstar Diana Ross.