I've only just seen the music video for Cheryl Cole's "Parachute" (yes I know it came out ages ago, but it takes me ages to get into the 'popular' stuff because the radio stations rinse the chart stuff to death) and I am positively in LOVE with the dress she wore.

I'm all set to draft my pattern and add my own personal changes when I realise something - the dress has a rise and fall hem, and I have NO IDEA how to make one of those.
A search on Google proved fruitless, so I thought maybe you guys would be able to help.
Anyone have any idea how to make a rise and fall hem?