Justin and Mila: Two friends with a lot of chemistry

Since his split with Jessica Biel, Justin Timberlake is the hottest bachelor around.  

And lucky Mila Kunis gets to spend a lot of time with him since they began filming the romantic comedy Friends With Benefits last year.

They've denied the romance rumours that have followed them ever since, but there's no escaping the fact they always have a great time together.

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The two good friends were in fits of giggles at Monday's New York premiere of their new film.

Mila looked stunning in a figure-hugging red dress whilst Justin opted for a smart grey suit.

On the guest list was Cristiano Ronaldo's model love Irina Shayk - who showed off her enviable figure in a short black dress - actress Emma Stone and fashionista Olivia Palermo.

More pics of ladies looking ravishing in red