Wild child: Cara's hair is everywhere

Cara Delevingne shows that even supermodels can have a bad hair day.

The star was almost unrecognisable behind dishevelled hair covering her face while out and about in London.

But the aspiring musician, who this week celebrated her 21st birthday, still had time to squeeze in a bit of drum practice - posting a video of her drumming on Instagram with the caption: “Practice is key."