Leonardo DiCaprio infuriated over leaked RiRi's B'day party pics

Melbourne: Leonardo DiCaprio has launched an investigation to find out the person behind the leaked party pics of Rihanna's 27th birthday bash, which went viral on internet.

'The Wolf of Wall Street' actor and 'We Found Love' singer were seen getting cosy on the dance floor while lighting up a cigarette, in the picture that has been doing rounds on the social media, News.com.au reported.

(Photo: TMZ)

Sources have revealed that the American actor and the 27-year-old singer were spotted kissing and dancing together at the party.

The 40-year-old actor helped organize the party for the singer, which was held at a private residence in the Hollywood Hills, with stars including Beyonce, Jay Z, Naomi Campbell and Mick Jagger.