Leonardo DiCaprio with Australia's Next Top Models at Sydney's Beach House

HAS Leonardo DiCaprio already moved on from his Victoria's Secret model girlfriend Erin Heatherton? 

Back at his favourite hangout Beach Haus in Sydney's Kings Cross on Friday night, Heatherton - who made her first public appearance with DiCaprio in December last year at a UFC fight at Luna Park - was nowhere to be seen.

Instead it was the usual procession of pretty young things who appeared to capture DiCaprio's attention - particularly last year's Australia's Next Top Model third-place getter Simone Holtznagel.

Joined by her BFF (and ANTM's 2011 winner) Montana Cox, Holtznagel was spied chatting to DiCaprio throughout the night - that was, when The Great Gatsby actor wasn't engrossed with his mobile phone.

Wearing his trademark baseball cap, DiCaprio appeared his usual glum self though he did crack a smile - albeit briefly - when he jumped up on a couch for a quick boogie.

"He seemed pretty chilled. He was mostly texting on his Blackberry but Holtznagel was definitely the standout of all the girls trying to get his attention," said a spy. "And she was one of the few girls he really spoke to."

Never far from at least one member of his famed "pussy posse" entourage (as is its Hollywood nickname), DiCaprio was joined this time by his best pal Lukas Haas.

And like any good wingman, DiCaprio made sure Haas wasn't without female attention, with Cox rarely straying from his side.

"Lukas and Montana left together," said an onlooker. "Leo was a little more discreet. He left unaccompanied just after 3am and a few minutes later Simone left too."

Asked if DiCaprio and Heatherton are now kaput, the actor's rep didn't get back to us.

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George Clooney Turns on Charm for Sydney

GEORGE Clooney's first Sydney appearance yesterday was an understated affair. There was no red carpet to greet the Hollywood star, nor were there crowds of hyperventilating fans.

Instead, a mostly female audience of business executives gathered at the Sydney Convention Centre in Darling Harbour to hear the famously handsome Clooney speak about his humanitarian work in Southern Sudan.

Welcomed with roaring applause, Clooney joked with his audience. "Thankyou for the weather," he quipped, as Sydney's spate of unseasonably cold and overcast days continued.

Clooney held court for about an hour, to the delight of the crowd.

"Any woman on the planet is going to be excited about meeting George Clooney," said Emma Isaacs, CEO of women's networking firm Business Chicks.

"I admire his philanthropic work and that he is using his profile to benefit the world ... his social work is what I'm interested in hearing about today."

Clooney was speaking at the Global Leadership Forum in his capacity as co-founder of Darfur aid organisation Not on Our Watch - which he created in 2007 with fellow actors Don Cheadle, Matt Damon and Brad Pitt - and as co-founder of the Satellite Sentinel Project, which tracks war criminals in Sudan.

Other speakers at the event included entrepreneurs Jeff Taylor, hip-hop magnate Russell Simmons and domestic queen Martha Stewart.

For celebrity chef and author Maggie Beer, there were two good reasons to attend. "I'm here to see Martha Stewart and George Clooney," she said with a laugh.

When asked if she had offered to cook Clooney dinner, she replied: "If I had have been quick enough thinking, I would have."

Merril Skyring, a director at Deloitte, paid $1400 for a VIP ticket to the event. "I'm interested really in leadership and innovation so it's a great day for that ... and George Clooney, of course," Ms Skyring said. "I think people think he's just a movie star but he's actually a really strong political activist and human rights activist.

"I was really pleased to see him represent himself that way and then still be the Hollywood star at the end of it and make all the ladies swoon - it was gorgeous."

Clooney spoke about collaboration and the art of making things happen.

Fashion photographer Leah McQueen, who flew from New York to hear Clooney speak, said, "He kept me captivated for the whole time.''

After paying $1100 for a ticket, and leaving immediately after Clooney's appearance, was it worth it? "Yes, I think so," she said, smiling.

Clooney, who flies out of Sydney today, has made the most of his whirlwind trip. He saw Cate Blanchett in Sydney Theatre Company's Gross und Klein on Sunday, saying the Australian star was "very, very good".