What is going on with Cameron Diazs nose?

We couldnt help but notice that something was going on with Cameron Diazs nose when the actress put in an appearance at NY Sun Works 5th Annual Greenhouse Project Benefit in New York yesterday.

Theres a distinct lack of symmetry, but what on earth has caused it?

Has Cam got a particularly nasty case of hay fever? Or maybe its got something to do with the nose job she needed for medical reasons a few years back?

Then theres also the time she broke her hooter in a surfing accident. Is that to blame for whats going on in this picture?

Compare and contrast how Cams nose usually looks