Leonardo DiCaprio joined pals Lukas Haas and Ethan Suplee for a sightseeing walk along Sydney's Bondi Beach earlier today. Leo and his friends chartered a private jet for their return to Australia, where Leo's been filming The Great Gatsby, after Leo celebrated his birthday with Victoria's Secret models in NYC over the weekend. Leonardo reportedly partied with Alessandra Ambrosio, Izabel Goulart, Ana Beatriz Barros, and Karlie Kloss as well as buddy Bradley Cooper. Leonardo's 37th birthday fell on Friday, which also happened to be the opening day for his latest film, J.Edgar. Despite an engaging performance by Leo and an all-star cast the Clint Eastwood directed project took the fifth spot at the box office during its opening weekend.