Beverly Hills has ordered all residents to wear face masks when they are walking outside and driving with the car windows open as it attempts to curb the spread of coronavirus.
A scarf, bandana or cloth covering the mouth will be sufficient when the order comes into force at 6pm today, city authorities said, with surgical masks 'encouraged' for health and emergency workers only.
Celebrities including Simon Cowell, pregnant Katy Perry and Justin Bieber have mansions in the southern Californian city.
Beverly Hills, southern California, will bring the measures into force at 6pm today. Pictured above is Emma Roberts, who has a home in the city, as she shops for toilet paper and paper towels in a grocery store eight miles away
Simon Cowell, who owns a $12 million mansion in the city, was pictured wearing a face mask as he shopped for essentials 25 miles away
Justin Bieber was seen visiting a Beverly Hills clinic with his wife Hailey Baldwin on March 13
Announcing the protective measures yesterday, Mayor Lester Friedman said: 'We believe this action will help protect and ultimately save lives.
'While we continue to ask our community members to remain at home, those who do go outside and the people they encounter will be safer.'
The city has also ordered the closure of all parks from 6pm on April 11, to limit interactions between its inhabitants.
The measures will add further restrictions to current regulations, which require face masks to be worn inside essential businesses.
Los Angeles county, with its star-studded and jet-setting inhabitants, has been hit hard by coronavirus. It has confirmed 223 deaths and 7,955