Apostrophes and pronouns
Apostrophes are NEVER used with pronouns that show possession. Examples include: its, hers, ours, yours, theirs and whose.
The prize was her’s for the taking. WRONG! (The prize was hers . . .)
The money was all their’s. WRONG! (The money was all theirs.)
“its” and “it’s” have entirely different meanings – see next page, Apostrophes that show omission, for the correct use of “it’s”.