So I've Solved The Mystery of the Hair Bow...

After extensive research (which included about half an hour in front of the mirror trying to re-create the look with my own hair) I have determined that this new trend can only be re-created with hair pieces. These models/ Paris Hilton haven't even been as resourceful as Gaga and found a hair piece in their own hair colour...

That and Lady Gaga wears a wig... (sorry - I had to say it!)