Need help finding my shade in Face & Body

[GlossyLips]

I hope I'm posting this in the right forum.
I'm an NC42ish, similar in complexion to Rihanna. Any idea what shade I would wear in the face and body foundation?

I was thinking C4 because I'm pretty sure it's the shade I got many years ago, but it seems all the ladies who wear C4 are NC35.

 

[DirtyPlum]

I think this should be in the Recommendations section. I am NC40 and wear C5 so that should be ok for you, or even c6.