Leonardo DiCaprio Takes Mystery Blonde on Australian Outing

We know one thing: She's not the mystery brunette he was keeping company with a few weeks ago

Blake Lively was in New York City, so she's accounted for.

So, it was obviously some other willowy blonde strolling the grounds of the historic Vaucluse House in New South Wales, Australia, today with Leonardo DiCaprio, who's been staying in the area for the last few months shooting The Great Gatsby with Carey Mulligan and Tobey Maguire.

Oh, and it obviously wasn't Carey Mulligan, either.

And, this woman doesn't appear to be the bikini-wearing brunette who was photographed with Leo back in October after a paddle-boarding session at the waterfront mansion he's renting in the Sydney suburb of Vaucluse. Leo's rep had no comment on the woman's identity.

According to local media reports, Leo has had no trouble making friends with the local talent, his brunette companion showing up after he was linked to Australian models Alyce Crawford and Kendal Schuler.

Unlike Jay Gatsby, Leo doesn't appear to be spending his time pining over any lost love!