Has Leonardo Dicaprio moved on from his split with Victoria's Secret model Erin Heatherton already? It certainly seems to be the case with onlookers suggesting he got very cosy with a co-star at a recent bash.

The serial dater and Golden Globe winning actor ended his relationship with Erin after ten months, reportedly because she wanted to get more 'serious' and Leo, who has been in numerous high profile relationships, feels he is not yet ready to commit having not yet had a go with all the models of Hollywood. He's not far off though. He has already romanced the likes of Kristen Zang, Emma Miller, Gisele Bundchen, Bar Refaeli and actress (for a change) Blake Lively.

Now, it seems he's back on actresses after being seen spending a lot of time in the company of his 'The Wolf of Wolf Street' co-star Margot Robbie. At a recent Las Vegas party for businessman Jho Low, an onlooker told The New York Post: 'There looks to be some strong chemistry between Leo and his leading lady. They spent a lot of time at the party together.'

On the other hand, another source in the publication insisted things are strictly platonic (however unbelievable that may sound). 'They are shooting a movie and are just friends', they said. 'They are definitely not an item.'