1 Arrives in first class and delights the aircrew with her politeness, and lovely smile.
2 Time for inflight drinkies. Kate gets a bit boisterous, and her entourage are giving each other sidewayseyes.
3 More drinks. Kate finds the lap of an older fellow passenger and plonks herself there. Airstaff observer thinks, "oh dear this looks a bit wrong".
4 Kate and older passenger adjourn to the plane bathroom, presumably for fashion discussion. This lasts about 30 minutes.
5 Hurrah! She's back in her seat. More drinks please
6 Nap-time. Aircrew add blanket to comatose supermodel and tiptoe away.

Source:
http://www.popbitch.com/board.html