Mischa Barton turns cave-girl as she roams the streets in leopard print underwear

Mischa Barton has been eyeful all travelers on their morning coffee run yesterday. The actress was busy filming St Trinian in the streets of Los Angeles in just over underwear. Using only a leopard bra and panties set, Mischa showed her slender figure and small waist as she larked about a man co-star - dressed similarly in Fred Flintstone-style Y-fronts.