Emma Weymouth cut a stylish figure in a black bikini and a Christian Dior sarong on Sunday as she left Le Club 55 in St Tropez.
The Marchioness Of Bath, 38, showed off her abs in the tiny bikini top which was decorated with a matching black flower.
She laughed beside her husband, Ceawlin Thynn, 50, the 8th Marquess Of Bath, who wore a white shirt and black shorts.
Emma accessorised with several silver bracelets and a black pair of Christian Dior sunglasses and carried a chic black purse and a straw beach bag.
Le Club 55 is a celebrity haunt serving fresh seafood and was visited by Jared Leto and his friends in July.
Emma herself was last there on Tuesday when she flashed her abs in a chic polka dot bikini.
The beauty and Ceawlin are joined in the south of France by their two young children John, Viscount Weymouth, and Lord Henry Thynn.
Emma and Ceawlin married at their stunning home Longleat in June 2013 and welcomed their first child John, in October 2014.
On her wedding day, Emma became the first black marchioness in British history.
Following a pregnancy struggle, the couple welcomed their second child, a son Henry, via a surrogate in Los Angeles in December 2016.
The boys' official titles are The Honourable John Alexander Ladi Thynn and The Honourable Henry Richard Isaac Thynn.
At the time, Emma told the Daily Mail: 'We are simply ecstatic. His arrival has completed our little family and brought us so much happiness.'
Ceawlin added: 'Never did I imagine that in West Hollywood I'd become father to John's little miracle baby brother.
'It's a wonder of modern science that the Longleat Bath family has been completed (for now at least) by Emma and I having a much-loved son, helped so crucially by a tremendous surrogate in California, to extend our family.'
In 2023, the couple purchased a property in West London once lived in by Winston Churchill for £18.5 million.
The Grade II-listed home was bought from a multi-millionaire divorcee whose former husband's Nazi-supporting grandfather was convicted at the Nuremberg trials.
Churchill lived there on-and-off from 1945 until his death - inside his bedroom - in 1965 at the age of 90 after suffering a stroke.
The grand home was last put on the market in 2016 for £28 million after undergoing extensive renovations.
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