Supermodel Elle Macpherson is believed to be dating multi-millionaire British businessman Damian Aspinall.
The Australian model, 44, dressed in a black leather mini skirt and leather jacket with knee-high boots, was photographed with Aspinall as they left a performance of Complicit at London's Old Vic Theatre.
The Sunday Mirror newspaper said the pair had been on a string of dates recently.
"They were all over each other as soon as they arrived at the theatre," an onlooker told the newspaper.
"It was like watching a pair of teenagers.
"You couldn't fail to notice them."
Aspinall, 47, is believed to be worth about STG45 million ($A95.12 million).
He is the son of casino operator and zoo owner John Aspinall, who left his son STG25 million ($A52.84 million) when he died eight years ago.
Damian added to his fortune during the 1980s property boom and now runs gaming clubs.
He has two daughters from his first marriage to Louise Sebag-Montefiore. He also fathered another daughter with British TV presenter Donna Air during their six-year romance.
Macpherson has two sons from her previous relationship with Swiss financier Arpad "Arkie" Busson.
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