Orlando Bloom and Sienna MillerOrlando Bloom and Sienna MillerOh crikey.

It seems that Jude Law might well be getting his dose of public humiliation after Sienna Miller was spotted getting cosy with another guy - and boy what a guy.

Step forward Mr Orlando Bloom - only one of the most handsome young chaps on the planet.

At the Cartier International Polo Event on Sunday, Sienna headed straight for former flame Orlando.

She was spotted gazing into his eyes, with her head and arm perched on his shoulder, as well as kissing the Pirates Of The Caribbean star and even perching herself on his lap.

As night fell, they sloped off to the VIP section, run by the Mayfair club Chinawhite, where they drank champers and nattered away.

Jude LawJude LawOne reveller told the Daily Mail: "They looked like a loved-up couple.

"Sienna had her arm round Orlando most of the night. They sat with their legs entwined, whispering in each other's ears and giggling."

Another onlooker told the Daily Mirror: "They looked very sweet and Orlando was very protective of her."

They did, however, leave separately.

Officially, the 23-year-old is still betrothed to Jude, although since the revelations about his affair with his children's nanny, Sienna has moved out and has not been wearing her engagement ring.

Instead, she has revealed that she is concentrating on her acting career.

Sienna and Orlando had a brief fling four years ago - when they were both unknown actors... my, how things have changed.

Of course, they could just be buddies and Orlando was perhaps giving Sienna some support after her traumatic week.