Sienna Miller & Rhys Ifans reportedly put on quite a show for fellow passengers during a flight from L.A. to London by engaging in a boozy romp at 37,000ft.

According to The Mirror, the pair passed the time during the 12-hour journey with some serious heavy petting, which culminated in Rhys whipping off his top to reveal his scrawny, white bod, and jumping into Sienna's fold-out single bed.

In between a “soundtrack of slurping and squelching” Sienna sent Rhys to the bar for wine, which he reportedly managed to spill all over himself on the way back.

By contrast, fellow passenger, Atonement star James McAvoy, passed the time with a sudoku puzzle book.

Bless.