Need help choosing Stila foundation shade

[kamil]

Hi Girls, I wanted to purchase stila natural finish foundation and not sure about which shade i should get. I use mac studio fix NC35 and NC40 in summer and C4 powder. I have medium tan skin tone. Any suggestions would be of great help.

 

[Gabriella24]

I really am not sure how they are naming the shades nowadays, but I have got a natural finish oil-free foundation in shade C, and I am nc20-25 or nw20-25 of mac studiofix line range. Hope it helps a bit?