Here's the french TV show bit some people talked about earlier. where Morgane is featured in great lengths. You'll see that without a doubt she did cut her hair (and may I add, it looks great).
You can also see interviews of Jean-Paul Gaultier, Christian Lacroix, Anne-Valerie Hash, Cyril Brulé (CEO of Viva Models) & even Eugenia Volodina.
Nice as I am, I even added english subtitles ; although pretty roughly so don't mind the errors

It's 11 minutes long.
Link here :
http://files-upload.com/files/93910/MorganeDubled07ss_FrenchTV.avi.html
P.S.: for those who might see this post in a few weeks/months when the link is down, feel free to ask for it in this topic as I'm checking it regularly, I can repost the video