11/07/2013 19:11 BST | Updated 22/05/2015 10:12 BST

Buying A Birthday Present? Cameron Diaz Shops Stella McCartney Before Her 40th

Cameron Diaz turns 40 tomorrow and after seeing these pictures of the star shopping in New York yesterday, something tells us she might be wearing a Stella McCartney dress to her birthday party.


Diaz hit Stella in a comfy but chic shopping ensemble - high-waisted shorts, a cream blazer and striped pumps - but what we really want to know is, what did she buy?!


We'll be keeping a close eye on the birthday girl and her party style tomorrow.

Let us know how you rate her latest look and see more of the star in our special edition, bumper style evolution below:

Hear about Cam's baby shower plans for her best friend Drew in the video below: