Baby one more time

Is it Britney Spears’ legacy or Britney Spears’s legacy? In other words, how do we take a singular noun that ends in s and make it possessive?

It's Britney's, b****

Possessive apostrophes can be a minefield. Where does the s go? Should there even be an s at all? We have the answers.

If you don't mind my saying so

Is it "excuse my asking" or "excuse me asking"? We discuss when to use a possessive before a gerund.