Summer Hot Spot: Down Under!

Mischa Barton, Nick Lachey and others find out what's up Down Under as they work and play in Australia. By Caryn Midler

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'FAMOUS' FACE

In Sydney, Barton caught the opening night of Cirque du Soleil's Varekai (left), and the next day got down to work. She filmed a commercial for local celebrity magazine Famous at Altona, a private mansion that's hosted such A-listers as Naomi Watts, Bono and Heath Ledger (at a cost of AU$40,000 a week).